Re: [PHP] Lightweight web server for Windows?

[Peter Ford]

O. Lavell wrote:
 
 Also, it is not for daily use. I have two desktop computers and a server 
 for that. This is for when I have to go by train or something.
 
 Essentially it is just an extra plaything.
 

Does the battery still hold enough charge for a train journey - that always
seems to be the first thing that goes on old laptops.
They make really good low-power servers for stuff like DNS or even firewalling
(as long as you can plug in enough network cards), but only when on mains power 
:(

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[PHP] Does PHP block requests?

[Peter Ford]

I have a tricky problem.

I'm trying to make a progress feedback mechanism to keep users informed about a
slowish process on the server end of a web app. The backend is generating a PDF
file from a bunch of data which extends to many pages. I can keep tabs on the
progress of this generation by working out how many lines of data is present,
and how much of it has been processed. I use that information to set a session
variable with a unique name - so for each step I set

$_SESSION['some-unique-name']=Array('total'=$totalLines,'count'=$linesProcessedSoFar);

Now on the front end I'm doing an AJAX call to a script that just encodes this
session variable into a JSON string and sends it back.

The problem is that while the PDF is being generated, the AJAX calls to get the
progress data (on a 1-second interval) are being blocked and I don't get why.
The PDF generation is also triggered by an AJAX call to a script which generates
the PDF in a given file location, then returns a URL to retrieve it with.

So it appears that the problem is that I can't have two AJAX calls to different
PHP scripts at the same time? WTF?

Checking the requests with Wireshark confirms the the browser is certainly
sending the progress calls while the original PDF call is waiting, so it's not
the browser side that's the problem: and once the PDF call is finished the
outstanding progress calls are all serviced (returning 100% completion of course
- not much use!) Different browsers (Firefox, IE, Chrome at least) give the same
result.

For reference, the server is Apache 2.2.10 on a SuSE linux 11.1 box using
mod_php5 and mpm_prefork - is that part of the problem, and is there an 
alternative?
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[PHP] Re: Class not returning value

[Peter Ford]

Pieter du Toit wrote:
 Hi
 
 This is my first class and it does not work, i do a return 
 $this-responseArray; with the public function getResult() method, but get 
 nothing. Can someone please help me.
 
 Thsi is how i create the object
 $number = new Smsgate($cell_numbers, $message, 27823361602, 27);
 $result = $number-getResult();
 
 Here is the code:
 ?php
 
 /**
  *
  * @version 1.0
  * @copyright 2009
  */
 
 /**
  */
 class Smsgate {
 
 protected $number;
 protected $message;
 protected $sender_id;
 protected $tofind;
 private $result;
 /**
  * Constructor
  */
 function __construct($number = , $message = , $sender_id = , 
 $tofind = )
 {
 
 $this-message = $message;
 $this-number = $number;
 $this-sender_id = $sender_id;
 $this-tofind = $tofind;
 }
 
 protected function display ($result)
 {
 return $result;
 }
 
 public function getResult()
 {
 return $this-processRequest();
 
 }
 public function numberErrors()
 {
 return $this-errorResult;
 }
 
 /**
  * Smsgate::checknumbers()
  *
  * @return array of correct and incorrect formatted numbers
  */
 private function processRequest()
 {
 echo nou by numers;
 print_r($this-number);
 // check if the property is an array and add to new array for 
 sending
 if (is_array($this-number)) {
 // check for starting digits
 $this-result = ;
 // loop through numbers and check for errors
 foreach ($this-number as $this-val) {
 
 $this-position = strpos($this-val , $this-tofind);
 
 // number correct
 if ($this-position === 0) {
 echo is integer br/;
 if ($this-result != ) {
 $this-result .= ,;
 }
 // create comma seperated numbers to send as bulk in 
 sendSMS method
 $this-result .= $this-val; //infobip multiple 
 recipients must be seperated by comma
 // create an array to use with responseStringExplode in 
 sendSMS method
 $this-cellarray[] = $this-val;
 echo Result is  . $this-result . br;
 } else {
 // numbers not in correct format
 $this-errorResult[] = $this-val;
 }
 
 } //end foreach
$this-sendSMS();
 
 } else {
 $this-result = Not ok;
  return $this-result;
 }
 
 }
 
 private function sendSMS()
 {
 
 $this-smsUrl = 
 'http://www.infobip.com/Addon/SMSService/SendSMS.aspx?user=password=';
 $this-post_data = 'sender=' . $this-sender_id . 'SMSText=' . 
 urlencode($this-message) . 'IsFlash=0GSM=' . $this-result;
 $this-sendData = $this-sendWithCurl($this-smsUrl, 
 $this-post_data);
 $this-responseStringExplode = explode(\n, $this-sendData);
 
  $count=0;
 foreach ($this-responseStringExplode as $this-rvalue) {
   $this-responseArray[$this-rvalue] = ($this-cellarray[$count]);
   $count = ++$count;
 }
  return $this-responseArray;
 }
  private function sendWithCurl($url, $postData) {
   if (!is_resource($this-connection_handle)) {
// Try to create one
if (!$this-connection_handle = curl_init()) {
 trigger_error('Could not start new CURL instance');
 $this-error = true;
 return;
}
   }
   curl_setopt($this-connection_handle, CURLOPT_URL, $url);
   curl_setopt ($this-connection_handle, CURLOPT_POST, 1);
   $post_fields = $postData;
   curl_setopt ($this-connection_handle, CURLOPT_POSTFIELDS, $post_fields);
   curl_setopt($this-connection_handle, CURLOPT_RETURNTRANSFER, 1);
   $this-response_string = curl_exec($this-connection_handle);
   curl_close($this-connection_handle);
   return $this-response_string;
  }
 }
 
 ? 
 
 


Based on a first scan of your code, it looks like the only return in
processRequest() is inside the else block, so nothing is returned unless the
processing fails.

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[PHP] Re: logic operands problem

[Peter Ford]

Merlin Morgenstern wrote:
 Hello everybody,
 
 I am having trouble finding a logic for following problem:
 
 Should be true if:
 page = 1 OR page = 3, but it should also be true if page = 2 OR page = 3
 
 The result should never contain 1 AND 2 in the same time.
 
 This obviously does not work:
 (page = 1 OR page = 3) OR (page = 2 OR page = 3)
 
 This also does not work:
 (page = 1 OR page = 3 AND page != 2) OR (page = 2 OR page = 3 AND page
 != 1)
 
 Has somebody an idea how to solve this?
 
 Thank you in advance for any help!
 
 Merlin


Surely what you need is xor (exclusive-or)
I can't believe a programmer has never heard of that!

(page==1 XOR page==2) AND page==3

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Re: [PHP] Change displayed file name to download

[Peter Lind]

You can set the name to display as you see fit, just change $filename
to your liking right before the header() call. If you just want to cut
the path, use basename($filename)

Regards
Peter

On 14 March 2010 21:29, Php Developer pdevelo...@rocketmail.com wrote:
 Hi,

 I'm using the following code:
 
 $fp      = fopen($filename, 'r+');
 $content = fread($fp,
 filesize($filename));
 fclose($fp);
 header(Content-type:
 application/msword);
 header(Content-Disposition: attachment;
 filename=$filename);
 echo $content;
 exit;
 ___

 Now when downloading a file the default name that appears for the user is
 the realname of the file i the server with the real path the only
 difference is that the slashes are modified by underscore.

 My
 question is: is there any way how to control the name that will be
 displayed for the customer? Or at least skip the path and display just
 the file's name?

 Thank you


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Re: [PHP] ldap_bind() connectivity

[Peter Lind]

You might want to check what the function outputs with:

var_dump($ldapbind);

after the call to ldap_bing(). That way you'll know what actually got
returned from the function.

On 15 March 2010 09:54, Ashley M. Kirchner ash...@pcraft.com wrote:
 Thanks to Jochem Mass for helping earlier to the string splitting.  Works
 great (so far).  Now on to my next problem, which has to do with
 ldap_bind().



 I have the following code:



      $ldapconn = @ldap_connect($adServer);

      $ldapbind = ldap_bind($ldapconn, $ldapuser, $ldappass);



      if ($ldapbind) {

        /** Successful authentication **/

        $_SESSION['username'] = $username;

        $_SESSION['password'] = $password;

      } else {

        /** Authentication failure **/

        $form-setError($field, laquo; Invalid username or password
 raquo;);

      }

      ldap_unbind($ldapconn);



 The problem with this is that if the ldap_bind() fails in the second line,
 it instantly spits text out to the browser:



 Warning: ldap_bind() [function.ldap-bind
 http://www.smartroute.org/contest/include/function.ldap-bind ]: Unable to
 bind to server: Invalid credentials in /home/contest/include/session.php on
 line 351



 And because it does that, it never reaches the if routine right below it and
 everything just bombs.  If I call it with @ldap_bind($ldapconn .) nothing
 happens.  The error message gets suppressed but it also doesn't do anything
 with the if routine afterwards.  It's almost like $ldapbind isn't getting
 set at all.



 What am I missing here?





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Re: [PHP] Need routine to tell me number of dimensions in array.

[Peter Lind]

This is one example where references actually decrease memory usage.
The main reason is the recursive nature of the function. Try

?php

echo memory_get_usage() . PHP_EOL;
$array = range(0,100);
$array[10] = range(0,10);
$array[20] = range(0,10);
$array[30] = range(0,10);
$array[40] = range(0,10);
$array[50] = range(0,10);
$array[60] = range(0,10);
$array[70] = range(0,10);
$array[80] = range(0,10);
$array[90] = range(0,10);
$array[100] = range(0,10);
echo memory_get_usage() . PHP_EOL;
carray($array);
function carray ($array)
{
foreach ($array as $value)
{
if (is_array($value)) carray($value);
}
echo memory_get_usage() . PHP_EOL;
echo count($array) . PHP_EOL;
}
echo memory_get_usage() . PHP_EOL;

And then compare with:

?php

echo memory_get_usage() . PHP_EOL;
$array = range(0,100);
$array[10] = range(0,10);
$array[20] = range(0,10);
$array[30] = range(0,10);
$array[40] = range(0,10);
$array[50] = range(0,10);
$array[60] = range(0,10);
$array[70] = range(0,10);
$array[80] = range(0,10);
$array[90] = range(0,10);
$array[100] = range(0,10);
echo memory_get_usage() . PHP_EOL;
carray($array);
function carray ($array)
{
$i = 0;
foreach ($array as $value)
{
if (is_array($value)) carray($value);
}
echo memory_get_usage() . PHP_EOL;
echo count($array) . PHP_EOL;
}
echo memory_get_usage() . PHP_EOL;

The memory usage spikes in the first example when you hit the second
array level - you don't see the same spike in the second example.

Regards
Peter

On 16 March 2010 15:46, Robert Cummings rob...@interjinn.com wrote:


 Richard Quadling wrote:

 On 15 March 2010 23:45, Daevid Vincent dae...@daevid.com wrote:

 Anyone have a function that will return an integer of the number of
 dimensions an array has?

 /**
  * Get the maximum depth of an array
  *
  * @param array $Data A reference to the data array
  * @return int The maximum number of levels in the array.
  */
 function arrayGetDepth(array $Data) {
        static $CurrentDepth = 1;
        static $MaxDepth = 1;

        array_walk($Data, function($Value, $Key) use($CurrentDepth,
 $MaxDepth) {
                if (is_array($Value)) {
                        $MaxDepth = max($MaxDepth, ++$CurrentDepth);
                        arrayGetDepth($Value);
                        --$CurrentDepth;
                }
        });

        return $MaxDepth;
 }

 Extending Jim and Roberts comments to this. No globals. By using a
 reference to the array, large arrays are not copied (memory footprint
 is smaller).

 Using a reference actually increases overhead. References in PHP were mostly
 useful in PHP4 when assigning objects would cause the object to be copied.
 But even then, for arrays, a Copy on Write (COW) strategy was used (and is
 still used) such that you don't copy any values. Try it for yourself:

 ?php

 $copies = array();
 $string = str_repeat( '*', 100 );

 echo memory_get_usage().\n;
 for( $i = 0; $i  1000; $i++ )
 {
    $copies[] = $string;
 }
 echo memory_get_usage().\n;

 ?

 Cheers,
 Rob.
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Re: [PHP] Need routine to tell me number of dimensions in array.

[Peter Lind]

Hmm, will probably have to look inside PHP for this ... the foreach
loop will copy each element as it loops over it (without actually
copying, obviously), however there's no change happening to the
element at any point and so there's nothing to suggest to the
copy-on-write to create a new instance of the sub-array.

It should look like this:
$a = array(0, 1, 2, array(0, 1, 2, 3), 4, 5, 6,  n);
$b = $a[3];
doStuffs($b);

Whether or not you loop over $a and thus move the internal pointer,
you don't change (well, shouldn't, anyway) $b as that's a subarray
which has it's own internal pointer, that isn't touched.

Or maybe I've gotten this completely backwards ...

Regards
Peter

On 16 March 2010 17:12, Robert Cummings rob...@interjinn.com wrote:
 Peter Lind wrote:

 This is one example where references actually decrease memory usage.
 The main reason is the recursive nature of the function. Try

 BTW, it's not the recursive nature of the function causing the problem. It's
 the movement of the internal pointer within the array. When it moves the COW
 realizes the copy's pointer has moved and splits off the copy. You can
 verify this by echoing the memory usage when you first enter carray(). The
 spike occurs inside the foreach loop.

 Cheers,
 Rob.
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Re: [PHP] web sniffer

[Peter Lind]

You should be able to do that by setting context options:
http://www.php.net/manual/en/context.http.php

On 19 March 2010 08:53, Jochen Schultz jschu...@sportimport.de wrote:
 Btw., when you use file_get_contets, is there a good way to tell the script
 to stop recieving the file after let's say 2 seconds - just in case the
 server is not reachable - to avoid using fsockopen?

 regards
 Jochen

 madunix schrieb:

 okay ..it works now i use
 ?php
 $data=file_get_contents(http://www.my.com;);
 echo $data;
 ?

 On Fri, Mar 19, 2010 at 12:32 AM, Adam Richardson simples...@gmail.com
 wrote:

 On Thu, Mar 18, 2010 at 6:08 PM, Ashley Sheridan
 a...@ashleysheridan.co.uk
 wrote:

 On Fri, 2010-03-19 at 00:11 +0200, madunix wrote:

 trying http://us3.php.net/manual/en/function.fsockopen.php
 do you a piece of code that  read parts  pages.


 On Fri, Mar 19, 2010 at 12:00 AM, Ashley Sheridan
 a...@ashleysheridan.co.uk wrote:


        On Fri, 2010-03-19 at 00:03 +0200, madunix wrote:

         I've been trying to read the contents from a particular URL
 into a
         string in PHP, and can't get it to work.  any help.
        
         Thanks
        
         --
         If there is a way, I will find one...***
         If there is none, I will make one...***
          madunix  **
        




        How have you been trying to do it so far?

        There are a couple of ways. file_get_contents() and fopen()
        will work on URL's if the right ports are open.

        Most usually though cURL is used for this sort of thing.

        Thanks,
        Ash
        http://www.ashleysheridan.co.uk







 --
 If there is a way, I will find one...***
 If there is none, I will make one...***
  madunix  **


 I think you're over-complicating things by using fsockopen(). Try one of
 the functions I mentioned in my last email

 Thanks,
 Ash
 http://www.ashleysheridan.co.uk


 I agree with Ashley, use one of the other options and then parse the
 response to get the part of the page you'd like to work with.

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Re: [PHP] Re: PHP in HTML code

[Peter Lind]

On 19 March 2010 10:17, Michael A. Peters mpet...@mac.com wrote:

 I don't care what people do in their code.
 I do not like released code with short tags, it has caused me problems when
 trying to run php webapps that use short tags, I have to go through the code
 and change them.

 So what people do with their private code, I could care less about.
 But if releasing php code for public consumption, I guess I'm a preacher
 asking people to get religion, because short tags do not belong in projects
 that are released to the public. Just like addslashes and magic quotes and
 most html entities should not be used in php code released for public
 consumption.


What he said. Now, could we get over this discussion? It's not exactly
going anywhere.

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Re: [PHP] no svn checkout of the current PHP development repo?

[Peter Lind]

You should probably have a look at the internals list - there's a lot
of discussion going on as to what should happen in terms of SVN
structure.

Regards
Peter

On 20 March 2010 12:32, Robert P. J. Day rpj...@crashcourse.ca wrote:

  just for fun, i figured i'd check out the current PHP development
 stream.  however, if you read the web page here:

  http://php.net/svn.php

 there's no mention of the trunk, simply references to branches such
 as 5.2 and 5.3.

  i popped over to:

  http://svn.php.net/viewvc/php/php-src/

 and, sure enough, there's no trunk directory.  am i just missing
 something?  because if i click on the PHP 6 link up there on the
 right (which represents exactly what i'd expect for the URL of the
 trunk), bad things happen:

  An Exception Has Occurred

  Unknown location: /php/php-src/trunk
  HTTP Response Status

  404 Not Found

 thoughts?  i'll assume this is just a temporary thing but, in any
 event, if the trunk is normally available, the PHP svn page should
 really mention it explicitly, not just the 5.x branches.

 rday
 --

 
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Re: [PHP] Filtering all output to STDERR

[Peter Lind]

You could consider suppressing errors for the duration of the
problematic call - if indeed you're looking at a warning that doesn't
grind everything to a halt.

On 22 March 2010 18:01, Marten Lehmann lehm...@cnm.de wrote:
 Hello,

 we have a strange problem here:

 - Our ISP is merging STDERR and STDOUT to STDOUT
 - We are calling a non-builtin function within PHP 5.2 which includes a lot
 of code and calls a lot of other functions
 - When calling this function, we receive the output Cannot open  on
 STDERR. But since STDERR and STDOUT are merged, this Cannot open  breaks
 the required HTTP-header which needs to be sent first.

 We really tried a lot to find out where this message comes from, we even
 used strace and ran PHP on the command line. But we cannot figure out the
 origin, so all we want to do is to get rid of the output sent to STDERR.

 We tried to close STDERR, but it didn't work out.

 We thought of using ob_start() and ob_end_clean(), but we cannot get it
 working with STDERR. Any ideas?

 Kind regards
 Marten

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Re: [PHP] Filtering all output to STDERR

[Peter Lind]

Have you tried with
http://dk2.php.net/manual/en/function.error-reporting.php or just the
@ operator?

On 22 March 2010 23:56, Marten Lehmann lehm...@cnm.de wrote:
 Hello,

 You could consider suppressing errors for the duration of the
 problematic call

 yes, but how?

 Regards
 Marten

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Re: [PHP] Filtering all output to STDERR

[Peter Lind]

Ahh, I see why my suggestions had no effect - I assumed you were
dealing with normal php errors, not something done customly by the
code.

I'm afraid the only option I see is that of debugging the problem
script to find out where it opens STDERR - if you're certain that the
script specifically outputs messages to STDERR, then it's opening that
stream somewhere before the output.

Regards
Peter

On 23 March 2010 11:28, Marten Lehmann lehm...@cnm.de wrote:
 Have you tried with
 http://dk2.php.net/manual/en/function.error-reporting.php or just the
 @ operator?

 Yes. But this does not work, because error levels and the @ operator only
 relate to errors thrown by the PHP runtime and have nothing to do with
 STDERR.

 But I need a way to close the STDERR file handle at the beginning of a
 script or at least catch and remove all output sent to STDERR.

 Regards
 Marten

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Re: [PHP] PHP to access shell script to print barcodes

[Peter Lind]

You can create a .php script that sets a proper header to make the
browser download the file rather than display it. That also allows you
to set the filename for the download. What you'd need to do is include
something like:

header(Content-Disposition: attachment; filename: 'barcodemerge.ps');

That tells the browser to download the file. You can also try setting
the content-type

header('Content-type: application/postscript');

Either of the above might do the trick for you.

Regards
Peter

On 23 March 2010 22:10, Rob Gould gould...@me.com wrote:
 I love the idea of using PHP to insert data into Postscript.  I'm just not 
 sure how to make it happen.

 The good news is that I've got barcodes drawing just the way I need them:

 http://www.winecarepro.com/kiosk/fast/shell/barcodemerge.ps

 The bad news is that's all hard-coded Postscript.  I'd like to take your 
 suggestion and use PHP to loop-through and draw the barcodes - - - however, 
 if I put anything that resembles PHP in my .ps file, bad things happen.

 Anyone know the secret to creating a postscript .ps file that had PHP code 
 injecting data into it?

 Here's the source file that works.  Where PHP would be handy is at the very 
 bottom of the script

 http://www.winecarepro.com/kiosk/fast/shell/barcodemerge.ps.zip


 On Mar 23, 2010, at 7:48 AM, Richard Quadling wrote:

 On 23 March 2010 05:48, Jochem Maas joc...@iamjochem.com wrote:
 Op 3/23/10 3:27 AM, Rob Gould schreef:
 I am trying to replicate the functionality that I see on this site:

 http://blog.maniac.nl/webbased-pdf-lto-barcode-generator/

 Notice after you hit SUBMIT QUERY, you get a PDF file with a page of 
 barcodes.  That's _exactly_ what I'm after.
 Fortunately, the author gives step-by-step instructions on how to do this 
 on this page:

 http://blog.maniac.nl/2008/05/28/creating-lto-barcodes/


 So I've gotten through all the steps, and have created the 
 barcode_with_samples.ps file, and have it hosted here:

 http://www.winecarepro.com/kiosk/fast/shell/

 Notice how the last few lines contain the shell-script that renders the 
 postscript:

 #!/bin/bash

 BASE=”100″;
 NR=$BASE

 for hor in 30 220 410
 do
 ver=740
 while [ $ver -ge 40 ];
 do
 printf -v FNR “(%06dL3)” $NR
 echo “$hor $ver moveto $FNR (includetext height=0.55) code39 barcode”
 let ver=$ver-70
 let NR=NR+1
 done
 done


 I need to somehow create a PHP script that executes this shell script.  
 And after doing some research, it sounds like
 I need to use the PHP exec command, so I do that with the following file:

 http://www.winecarepro.com/kiosk/fast/shell/printbarcodes.php

 Which has the following script:

 ?php

 $command=http://www.winecarepro.com/kiosk/fast/shell/barcode_with_sample.ps;;
 exec($command, $arr);

 echo $arr;

 ?


 And, as you can see, nothing works.  I guess firstly, I'd like to know:

 A)  Is this PHP exec call really the way to go with executing this shell 
 script?  Is there a better way?  It seems to me like it's not really 
 executing.

 that's what exec() is for. $command need to contain a *local* path to the 
 command in question, currently your
 trying to pass a url to bash ... which obviously doesn't do much.

 the shell script in question needs to have the executable bit set in order 
 to run (either that or change to command to
 run bash with your script as an argument)

 I'd also suggest putting the shell script outside of your webroot, or at 
 least in a directory that's not accessable
 from the web.

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 I think this is a translation of the script to PHP.

 ?php
 $BASE = 100;
 $NR   = $BASE;

 foreach(array(30, 220, 410) as $hor) {
       $ver = 740;
       while ($ver = 40) {
               printf($hor $ver moveto (%06dL3) (includetext height=0.55) 
 code39
 barcode\n, $NR);
               $ver -= 70;
               ++$NR;
       }
 }



 It produces output like ...

 30 740 moveto (000100L3) (includetext height=0.55) code39 barcode
 30 670 moveto (000101L3) (includetext height=0.55) code39 barcode
 30 600 moveto (000102L3) (includetext height=0.55) code39 barcode
 30 530 moveto (000103L3) (includetext height=0.55) code39 barcode
 30 460 moveto (000104L3) (includetext height=0.55) code39 barcode
 30 390 moveto (000105L3) (includetext height=0.55) code39 barcode
 30 320 moveto (000106L3) (includetext height=0.55) code39 barcode
 30 250 moveto (000107L3) (includetext height=0.55) code39 barcode
 30 180 moveto (000108L3) (includetext height=0.55) code39 barcode
 30 110 moveto (000109L3) (includetext height=0.55) code39 barcode
 30 40 moveto (000110L3) (includetext height=0.55) code39 barcode
 220 740 moveto (000111L3) (includetext height=0.55) code39 barcode
 220 670 moveto (000112L3) (includetext height=0.55) code39 barcode
 220 600 moveto (000113L3) (includetext height=0.55) code39 barcode
 220 530 moveto (000114L3) (includetext height=0.55) code39 barcode
 220 460

Re: [PHP] PHP to access shell script to print barcodes

[Peter Lind]

The problem you're getting is that your web-server interprets the
request as a request for a normal file and just sends it - in effect,
you're not outputting the postscript file, you're just sending the
.php file. Normally, you'll only get your php executed if the file
requested is a .php or .phtml - unless you've changed your server
config.

Try creating a serveps.php that uses the header(Content-Disposition:
attachment; filename: 'serveps.ps') instead, see if that helps you.

Regards

On 24 March 2010 06:09, Rob Gould gould...@me.com wrote:
 Well, that did something, and it does sound like it should work.  I've 
 scoured the web and haven't found anyone with code that does what I'm trying 
 to do.

 I've got a working, hardcoded Postscript file here:

 http://www.winecarepro.com/kiosk/fast/shell/barcodemerge.ps

 But I need to somehow serve it with PHP, so I can change some variables in it.

 By putting headers in place with PHP, and then doing an echo of the 
 postscript, I get postscript errors (though Preview doesn't tell me what the 
 error is):

 http://www.winecarepro.com/kiosk/fast/shell/serverps.ps

 Trying to trick the web-browser into thinking it's receiving Postscript from 
 a PHP file is tricky.  I don't know what to do next.

 Here's the code I was using in the above url:  
 http://www.winecarepro.com/kiosk/fast/shell/serveps.php.zip

 It's not clear to me if the server is parsing the postscript first and then 
 serving it, or if the server is server the postscript as-is and the browser 
 sends it to Preview which interprets it.

 I basically want to replicate the functionality found here:

 http://blog.maniac.nl/webbased-pdf-lto-barcode-generator/



 On Mar 23, 2010, at 5:37 PM, Peter Lind wrote:

 You can create a .php script that sets a proper header to make the
 browser download the file rather than display it. That also allows you
 to set the filename for the download. What you'd need to do is include
 something like:

 header(Content-Disposition: attachment; filename: 'barcodemerge.ps');

 That tells the browser to download the file. You can also try setting
 the content-type

 header('Content-type: application/postscript');

 Either of the above might do the trick for you.

 Regards
 Peter

 On 23 March 2010 22:10, Rob Gould gould...@me.com wrote:
 I love the idea of using PHP to insert data into Postscript.  I'm just not 
 sure how to make it happen.

 The good news is that I've got barcodes drawing just the way I need them:

 http://www.winecarepro.com/kiosk/fast/shell/barcodemerge.ps

 The bad news is that's all hard-coded Postscript.  I'd like to take your 
 suggestion and use PHP to loop-through and draw the barcodes - - - however, 
 if I put anything that resembles PHP in my .ps file, bad things happen.

 Anyone know the secret to creating a postscript .ps file that had PHP code 
 injecting data into it?

 Here's the source file that works.  Where PHP would be handy is at the very 
 bottom of the script

 http://www.winecarepro.com/kiosk/fast/shell/barcodemerge.ps.zip


 On Mar 23, 2010, at 7:48 AM, Richard Quadling wrote:

 On 23 March 2010 05:48, Jochem Maas joc...@iamjochem.com wrote:
 Op 3/23/10 3:27 AM, Rob Gould schreef:
 I am trying to replicate the functionality that I see on this site:

 http://blog.maniac.nl/webbased-pdf-lto-barcode-generator/

 Notice after you hit SUBMIT QUERY, you get a PDF file with a page of 
 barcodes.  That's _exactly_ what I'm after.
 Fortunately, the author gives step-by-step instructions on how to do 
 this on this page:

 http://blog.maniac.nl/2008/05/28/creating-lto-barcodes/


 So I've gotten through all the steps, and have created the 
 barcode_with_samples.ps file, and have it hosted here:

 http://www.winecarepro.com/kiosk/fast/shell/

 Notice how the last few lines contain the shell-script that renders the 
 postscript:

 #!/bin/bash

 BASE=”100″;
 NR=$BASE

 for hor in 30 220 410
 do
 ver=740
 while [ $ver -ge 40 ];
 do
 printf -v FNR “(%06dL3)” $NR
 echo “$hor $ver moveto $FNR (includetext height=0.55) code39 barcode”
 let ver=$ver-70
 let NR=NR+1
 done
 done


 I need to somehow create a PHP script that executes this shell script. 
  And after doing some research, it sounds like
 I need to use the PHP exec command, so I do that with the following file:

 http://www.winecarepro.com/kiosk/fast/shell/printbarcodes.php

 Which has the following script:

 ?php

 $command=http://www.winecarepro.com/kiosk/fast/shell/barcode_with_sample.ps;;
 exec($command, $arr);

 echo $arr;

 ?


 And, as you can see, nothing works.  I guess firstly, I'd like to know:

 A)  Is this PHP exec call really the way to go with executing this shell 
 script?  Is there a better way?  It seems to me like it's not really 
 executing.

 that's what exec() is for. $command need to contain a *local* path to the 
 command in question, currently your
 trying to pass a url to bash ... which obviously doesn't do much.

 the shell script in question needs to have

Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 24 March 2010 10:38, Rene Veerman rene7...@gmail.com wrote:
 and if threading and shared memory aren't implemented, then hey, the
 php dev team can build something else in that these naysayers DO need
 eh...

 lol...

Do you have any idea how sad and pathetic you come across? I'm very
sorry to say this, but really, now's the time to stop posting and step
back, take a deep breath, then focus on something else.

 On Wed, Mar 24, 2010 at 11:36 AM, Rene Veerman rene7...@gmail.com wrote:
 unless the actual php development team would like to weigh in on this
 matter of course.

 yes, i do consider it that important.

 these nay-sayers usually also lobby the dev-team to such extent that
 these features would actually not make it into php.

 On Wed, Mar 24, 2010 at 11:31 AM, Rene Veerman rene7...@gmail.com wrote:
 php is not a hammer, its a programming language.

 one that i feel needs to stay ahead of the computing trend if it is to
 be considered a language for large scale applications.

 but you nay-sayers here have convinced me; i'll be shopping for
 another language with which to serve my applications and the weboutput
 they produce..

 thanks for opening my eyes and telling to abandon ship in time.


 On Wed, Mar 24, 2010 at 11:22 AM, Stuart Dallas stut...@gmail.com wrote:
 Heh, you guys are funny!

 On 24 Mar 2010, at 08:58, Rene Veerman wrote:

 On Wed, Mar 24, 2010 at 10:47 AM, Per Jessen p...@computer.org wrote:
 Rene Veerman wrote:

 popular : facebook youtube etc


 Rene, I must be missing something here.  That sort of size implies
 millions in advertising revenue, so why are we discussing how much
 performance we can squeeze out of a single box?  I mean, I'm all for
 efficient use of system resources, but if I have a semi-scalable
 application, it's a lot easier just getting another box than trying to
 change the implementation language.  OTOH, if my design is not
 scalable, it's probably also easier to redo it than trying to change
 the implementation language.

 again:
 a) you're determining the contents of my toolset, without it affecting
 you at all. the way you want it php will degrade into a toy language.

 And how exactly are you defining a toy language? If you want features like 
 threading, why not switch to a language that already supports it?

 b) i will aim for all possible decreases in development time and
 operating costs during, not only in the grow phase but also in hard
 economic times. any business person knows why.

 Yup, this is very good practice, but deciding that one particular tool is 
 the only option is a fatal business decision. Use the right tool for the 
 job!

 What you're trying to do here is akin to taking a hammer and whittling a 
 screwdriver in to the handle. It's ridiculously inefficient, and imo, 
 pretty stupid.

 and you're still trying to impose a toolset on me.

 I didn't think I was - you're the one who seem to be fixed on PHP as the
 only solution, and advocating that it be enhanced to suit your
 purposes.

 no, php is just my toolset of choice, and i think it should grow with
 the times and support threading and shared memory.
 maybe even a few cool features to enable use-as-a-cloud.

 PHP is a hammer, and a bloody good one at that, but you seem to want it to 
 be a tool shed. Accept that it's a hammer, go visit a DIY store, find the 
 right tool for the job and get on with your life!

 The fact is that even if we all agree that PHP needs threading, and one or 
 more people start working on putting it into the core, it will likely be 
 many months before you see any sight of a working version, and even longer 
 before you see a stable release.

 -Stuart

 --
 http://stut.net/



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Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 24 March 2010 11:53, Tommy Pham tommy...@gmail.com wrote:
 On Wed, Mar 24, 2010 at 3:44 AM, Per Jessen p...@computer.org wrote:
 Tommy Pham wrote:

 On Wed, Mar 24, 2010 at 3:20 AM, Per Jessen p...@computer.org wrote:
 Tommy Pham wrote:

 What I find funny is that one of opponents of PHP threads earlier
 mentioned that how silly it would be to be using C in a web app.
 Now I hear people mentioning C when they need productivity or
 speed...


 I think I was the one to mention the latter, but as I started out
 saying, and as others have said too, it's about the right tool for
 the right job.  When choosing a tool, there are a number of factors
 to consider - developer productivity, available skills, future
 maintenance, performance, scalability, portability, parallelism,
 performance etcetera.


 Funny you should mention all that.  Let's say that you're longer with
 that company, either by direct employment or contract consultant.
 You've implemented C because you need 'thread'.  Now your replacement
 comes in and has no clue about C even though your replacement is a PHP
 guru.  How much headache is maintenance gonna be?  Scalability?
 Portability? wow

 Who was the idi... who hired someone who wasn't suited for the job?
 Tommy, that's a moot argument.  You can't fit a square peg in a round
 hole.



 --
 Per Jessen, Zürich (12.5°C)



 Suited for the job?  You mean introduce more complexity to a problem
 that what could be avoided to begin with if PHP has thread support?
 hmmm

Except, you already introduced complexity into the problem. You see,
working with threads is another requirement, whether it be done in PHP
or not. Hence, hiring the right guy is independent of whether you have
threads in PHP or not - your problem is no less nor no more complex
whether you do threading inside or outside PHP. You just assume that
adding thread support to PHP will solve the problem, but there's no
actual basis to believe this.


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Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 24 March 2010 12:04, Tommy Pham tommy...@gmail.com wrote:
 On Wed, Mar 24, 2010 at 3:52 AM, Lester Caine les...@lsces.co.uk wrote:
 Tommy Pham wrote:

 How exactly will threading in PHP help with the size of the database?
 That makes no sense to me, please help me understand how you think 
 threading
 will help in this scenario.

 Looking at my example, not just the rows  There are other features
 that require queries to a DB for simple request of a category by a
 shopper,  instead of running those queries in series, running them in
 parallel would yield better response time.

 Database size issues are tackled with clustering, caching and DB
 optimisation. Threading in the language accessing the DB has no advantage
 here.

 Yes, it does.  As mentioned several times, instead of running the
 queries in series, run them in parallel.  If each of the queries takes
 about .05 to .15 seconds.  How long would it take to run them in
 serial?  How long do you it take to run them in parallel?

 Any you have a database that can actually handle that?
 If the database is taking 0.1 seconds per query, and you have 10 queries,
 then getting the data is going to take 1 second to generate. If you want
 some slow query to be started, and come back for the data later, then I
 thought we already had that? But again this is part of the database driver
 anyway. No need to add threading to PHP to get the database connection to
 pull data in the most efficient way. And one does not write the driver in
 PHP? We are using C there already?

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 Exactly my point.  10 queries taking .1 second each running in serial
 is 1 second total.  How long would it take to run all those same
 queries simultaneously??? What's so difficult about the concept of
 serial vs parallel?

Hmm, just wondering, but how long do you think it will take your
high-traffic site to buckle under the load of the database queries you
want to execute when now you want all of them to execute at the same
time? Going with the 10 queries of .1 second each ... how far do you
think you can scale that before you overload your database server? I'm
just wondering here, I could be completely off the bat.

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Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 24 March 2010 12:14, Tommy Pham tommy...@gmail.com wrote:
 On Wed, Mar 24, 2010 at 4:09 AM, Peter Lind peter.e.l...@gmail.com wrote:
 On 24 March 2010 12:04, Tommy Pham tommy...@gmail.com wrote:
 On Wed, Mar 24, 2010 at 3:52 AM, Lester Caine les...@lsces.co.uk wrote:
 Tommy Pham wrote:

 How exactly will threading in PHP help with the size of the database?
 That makes no sense to me, please help me understand how you think 
 threading
 will help in this scenario.

 Looking at my example, not just the rows  There are other features
 that require queries to a DB for simple request of a category by a
 shopper,  instead of running those queries in series, running them in
 parallel would yield better response time.

 Database size issues are tackled with clustering, caching and DB
 optimisation. Threading in the language accessing the DB has no advantage
 here.

 Yes, it does.  As mentioned several times, instead of running the
 queries in series, run them in parallel.  If each of the queries takes
 about .05 to .15 seconds.  How long would it take to run them in
 serial?  How long do you it take to run them in parallel?

 Any you have a database that can actually handle that?
 If the database is taking 0.1 seconds per query, and you have 10 queries,
 then getting the data is going to take 1 second to generate. If you want
 some slow query to be started, and come back for the data later, then I
 thought we already had that? But again this is part of the database driver
 anyway. No need to add threading to PHP to get the database connection to
 pull data in the most efficient way. And one does not write the driver in
 PHP? We are using C there already?

 --
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 -
 Contact - http://lsces.co.uk/wiki/?page=contact
 L.S.Caine Electronic Services - http://lsces.co.uk
 EnquirySolve - http://enquirysolve.com/
 Model Engineers Digital Workshop - http://medw.co.uk//
 Firebird - http://www.firebirdsql.org/index.php

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 Exactly my point.  10 queries taking .1 second each running in serial
 is 1 second total.  How long would it take to run all those same
 queries simultaneously??? What's so difficult about the concept of
 serial vs parallel?

 Hmm, just wondering, but how long do you think it will take your
 high-traffic site to buckle under the load of the database queries you
 want to execute when now you want all of them to execute at the same
 time? Going with the 10 queries of .1 second each ... how far do you
 think you can scale that before you overload your database server? I'm
 just wondering here, I could be completely off the bat.

 IIRC, one of opponents of PHP thread mention load balancer/cluster or
 another opponent mention 'throw money into the hardware problem'

Yes. If you can accept that solution for this problem, why not for the
other problem?

Please keep in mind that I'm not for or against threads in PHP. I
think they can solve some problems and I think they'll create a host
of others - currently I have no idea if the benefits would outweigh
the costs.

I just have a huge problem understanding why alternative solutions to
problems are thrown out with No! That won't work when they haven't
been shown to be problematic. So far, we've seen no examples of
situations where PHP would be the best choice of language and would
need threads to solve the problem at hand.

Assuming that you have a right to use a threaded version of PHP
amounts to walking into your favourite tool-store and demanding that
you get a hammer that doubles as a phone. And when none are available,
you start yelling at other customers for suggesting the use of a phone
and hammer in combination.


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Re: [PHP] Properly handling multiple constructors.

[Peter Lind]

Hmmm, that looks to me like you're trying to solve a problem in PHP
with a c/c++c/# overloading solution. I'd give the builder pattern a
try instead: http://en.wikipedia.org/wiki/Builder_pattern

On 24 March 2010 13:01, Richard Quadling rquadl...@googlemail.com wrote:
 Hi.

 I have a scenario where I would _like_ to have multiple constructors
 for a class.

 Each constructor has a greater number of parameters than the previous one.

 e.g.

 ?php
 class myClass {
 __construct(string $Key) // use key to get the complex details.
 __construct(string $Part1, string $Part2, string $Part3) //
 Alternative route to the complex details.
 __construct(array $Complex) // All the details
 }

 Essentially, SimpleKey is a key to a set of predefined rules. Part1, 2
 and 3 are the main details and well documented defaults for the rest
 of the rules. Complex is all the rules.

 Each constructor will end up with all the parts being known ($Key,
 $Part1, $Part2, $Part3, $Complex).

 But, PHP doesn't support multiple constructors.

 Initially I thought about this ...

 __construct($Key_Part1_Complex, $Part2=Null, $Part3=Null)

 But then documenting the first param as being 1 of three different
 meanings is pretty much a no go.

 So I'm looking for a clean and easily understood way to provide this.

 I won't be the only user of the code and not everyone has the same
 knowledge level, hence a mechanism that is easily documentable.

 I think I may need a factory with multiple methods (FactoryKey,
 FactoryPart1To3, FactoryComplex). Make the factory a static/singleton.
 All these methods eventually call the real class with the complex
 rule.

 Is that obvious enough?

 Regards,

 Richard.


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Re: [PHP] Properly handling multiple constructors.

[Peter Lind]

And how exactly does that differ from building the same pizza in
different ways? Builder doesn't mean you have to create different
objects, it means taking the complexity in building a given object or
set of objects and storing it in one place.

In your case, it allows you to build your object in different ways
while documenting it properly and avoid the huge switch inside your
constructor that Nilesh proposed.

On 24 March 2010 13:35, Richard Quadling rquadl...@googlemail.com wrote:
 On 24 March 2010 12:06, Peter Lind peter.e.l...@gmail.com wrote:
 Hmmm, that looks to me like you're trying to solve a problem in PHP
 with a c/c++c/# overloading solution. I'd give the builder pattern a
 try instead: http://en.wikipedia.org/wiki/Builder_pattern

 On 24 March 2010 13:01, Richard Quadling rquadl...@googlemail.com wrote:
 Hi.

 I have a scenario where I would _like_ to have multiple constructors
 for a class.

 Each constructor has a greater number of parameters than the previous one.

 e.g.

 ?php
 class myClass {
 __construct(string $Key) // use key to get the complex details.
 __construct(string $Part1, string $Part2, string $Part3) //
 Alternative route to the complex details.
 __construct(array $Complex) // All the details
 }

 Essentially, SimpleKey is a key to a set of predefined rules. Part1, 2
 and 3 are the main details and well documented defaults for the rest
 of the rules. Complex is all the rules.

 Each constructor will end up with all the parts being known ($Key,
 $Part1, $Part2, $Part3, $Complex).

 But, PHP doesn't support multiple constructors.

 Initially I thought about this ...

 __construct($Key_Part1_Complex, $Part2=Null, $Part3=Null)

 But then documenting the first param as being 1 of three different
 meanings is pretty much a no go.

 So I'm looking for a clean and easily understood way to provide this.

 I won't be the only user of the code and not everyone has the same
 knowledge level, hence a mechanism that is easily documentable.

 I think I may need a factory with multiple methods (FactoryKey,
 FactoryPart1To3, FactoryComplex). Make the factory a static/singleton.
 All these methods eventually call the real class with the complex
 rule.

 Is that obvious enough?

 Regards,

 Richard.


 --
 -
 Richard Quadling
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 I'm not building different types of pizza. Just the same pizza via
 different routes.

 Along the lines of ...

 Pizza = new Pizza('MyFavouritePizza') // A ham+pineapple+cheese pizza.
 Pizza = new Pizza('ham', 'pineapple', 'cheese'); // A generic
 ham+pineapple+cheese pizza
 Pizza = new Pizza(array('base' = 'thin', 'toppings' = array('ham',
 'pineapple'), 'cheese'=true)); // A complex description.

 I suppose the interfaces are beginner, intermediate and advanced, but
 ultimately all generate identical objects.

 Richard.

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Re: [PHP] Properly handling multiple constructors.

[Peter Lind]

One of the main points of the OP was that you can document the code
properly. Your example doesn't allow for nice docblocks in any way, as
you'll either have to param points or a whole lot of noise.

Quick note: __ prefixed functions are reserved, you shouldn't use
that prefix for any of your own functions. However unlikely it is that
PHP will ever have a __construct_bluh() function ...

On 24 March 2010 15:22, Robert Cummings rob...@interjinn.com wrote:
 Robert Cummings wrote:

 Richard Quadling wrote:

 Hi.

 I have a scenario where I would _like_ to have multiple constructors
 for a class.

 Each constructor has a greater number of parameters than the previous
 one.

 e.g.

 ?php
 class myClass {
 __construct(string $Key) // use key to get the complex details.
 __construct(string $Part1, string $Part2, string $Part3) //
 Alternative route to the complex details.
 __construct(array $Complex) // All the details
 }

 Essentially, SimpleKey is a key to a set of predefined rules. Part1, 2
 and 3 are the main details and well documented defaults for the rest
 of the rules. Complex is all the rules.

 Each constructor will end up with all the parts being known ($Key,
 $Part1, $Part2, $Part3, $Complex).

 But, PHP doesn't support multiple constructors.

 Initially I thought about this ...

 __construct($Key_Part1_Complex, $Part2=Null, $Part3=Null)

 But then documenting the first param as being 1 of three different
 meanings is pretty much a no go.

 So I'm looking for a clean and easily understood way to provide this.

 I won't be the only user of the code and not everyone has the same
 knowledge level, hence a mechanism that is easily documentable.

 I think I may need a factory with multiple methods (FactoryKey,
 FactoryPart1To3, FactoryComplex). Make the factory a static/singleton.
 All these methods eventually call the real class with the complex
 rule.

 Is that obvious enough?

 Factory method is probably the cleanest and simplest solution. Just pass
 an ID as the first parameter to the real constructor and then it can route
 to the appropriate behaviour:

 Here's a better example (tested):

 ?php

 class Foo
 {
    const CONSTRUCT_BLAH = 1;
    const CONSTRUCT_BLEH = 2;
    const CONSTRUCT_BLUH = 3;

    function __construct( $constructId )
    {
        static $map = array
        (
            self::CONSTRUCT_BLAH = '__construct_blah',
            self::CONSTRUCT_BLEH = '__construct_bleh',
            self::CONSTRUCT_BLUH = '__construct_bluh',
        );

        $obj = null;

        if( isset( $map[$constructId] ) )
        {
            $args = func_get_args();
            $args = array_shift( $args );

            call_user_func_array(
                array( 'self', $map[$constructId] ), $args );
        }
        else
        {
            // Generate an error or exception.
        }
    }

    static function __construct_bleh( $arg1 )
    {
        echo Called: .__FUNCTION__.( $arg1 )\n;
    }

    static function __construct_blah( $arg1 )
    {
        echo Called: .__FUNCTION__.( $arg1 )\n;
    }

    static function __construct_bluh( $arg1 )
    {
        echo Called: .__FUNCTION__.( $arg1 )\n;
    }

    static function getBlah( $arg1 )
    {
        return new Foo( self::CONSTRUCT_BLAH, $arg1 );
    }

    static function getBleh( $arg1 )
    {
        return new Foo( self::CONSTRUCT_BLEH, $arg1 );
    }

    static function getBluh( $arg1 )
    {
        return new Foo( self::CONSTRUCT_BLUH, $arg1 );
    }
 }

 $obj = Foo::getBlah( 'blah' );
 $obj = Foo::getBleh( 'bleh' );
 $obj = Foo::getBluh( 'bluh' );

 ?

 Cheers,
 Rob.
 --
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 Application and Templating Framework for PHP

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Re: [PHP] Properly handling multiple constructors.

[Peter Lind]

On 24 March 2010 15:33, Robert Cummings rob...@interjinn.com wrote:
 Peter Lind wrote:

 One of the main points of the OP was that you can document the code
 properly. Your example doesn't allow for nice docblocks in any way, as
 you'll either have to param points or a whole lot of noise.

 I dunno, seems highly documentable to me. Each route is handled by it's own
 method with the parameters being fully declared in the handler method's
 signature.

Only problem is the OP wanted to be able to created objects with
variable amounts of arguments. I.e. passing just one argument to the
constructor wasn't an option, far as I could tell. That's why he was
looking at c++/c# overloading: creating a constructor for each
scenario because the amount and kind of arguments varied.

Which means that the docblock for your constructor will look something like

/**
 * dynamic constructor
 *
 * @param int $constructor_type
 * @param string|array|object|whatever_you_could_think_to_throw_at_it $something
 * @param string|array|object|whatever_you_could_think_to_throw_at_it
$something this is optional
 * @param etc
 *
 * @access public
 * @return void
 */
 Quick note: __ prefixed functions are reserved, you shouldn't use
 that prefix for any of your own functions. However unlikely it is that
 PHP will ever have a __construct_bluh() function ...

 Yeah, I know... I threw caution to the wind in this quick example. But for
 the sake of archives and newbies reading them, I shouldn't have :)

 Cheers,
 Rob.



 On 24 March 2010 15:22, Robert Cummings rob...@interjinn.com wrote:

 Robert Cummings wrote:

 Richard Quadling wrote:

 Hi.

 I have a scenario where I would _like_ to have multiple constructors
 for a class.

 Each constructor has a greater number of parameters than the previous
 one.

 e.g.

 ?php
 class myClass {
 __construct(string $Key) // use key to get the complex details.
 __construct(string $Part1, string $Part2, string $Part3) //
 Alternative route to the complex details.
 __construct(array $Complex) // All the details
 }

 Essentially, SimpleKey is a key to a set of predefined rules. Part1, 2
 and 3 are the main details and well documented defaults for the rest
 of the rules. Complex is all the rules.

 Each constructor will end up with all the parts being known ($Key,
 $Part1, $Part2, $Part3, $Complex).

 But, PHP doesn't support multiple constructors.

 Initially I thought about this ...

 __construct($Key_Part1_Complex, $Part2=Null, $Part3=Null)

 But then documenting the first param as being 1 of three different
 meanings is pretty much a no go.

 So I'm looking for a clean and easily understood way to provide this.

 I won't be the only user of the code and not everyone has the same
 knowledge level, hence a mechanism that is easily documentable.

 I think I may need a factory with multiple methods (FactoryKey,
 FactoryPart1To3, FactoryComplex). Make the factory a static/singleton.
 All these methods eventually call the real class with the complex
 rule.

 Is that obvious enough?

 Factory method is probably the cleanest and simplest solution. Just pass
 an ID as the first parameter to the real constructor and then it can
 route
 to the appropriate behaviour:

 Here's a better example (tested):

 ?php

 class Foo
 {
   const CONSTRUCT_BLAH = 1;
   const CONSTRUCT_BLEH = 2;
   const CONSTRUCT_BLUH = 3;

   function __construct( $constructId )
   {
       static $map = array
       (
           self::CONSTRUCT_BLAH = '__construct_blah',
           self::CONSTRUCT_BLEH = '__construct_bleh',
           self::CONSTRUCT_BLUH = '__construct_bluh',
       );

       $obj = null;

       if( isset( $map[$constructId] ) )
       {
           $args = func_get_args();
           $args = array_shift( $args );

           call_user_func_array(
               array( 'self', $map[$constructId] ), $args );
       }
       else
       {
           // Generate an error or exception.
       }
   }

   static function __construct_bleh( $arg1 )
   {
       echo Called: .__FUNCTION__.( $arg1 )\n;
   }

   static function __construct_blah( $arg1 )
   {
       echo Called: .__FUNCTION__.( $arg1 )\n;
   }

   static function __construct_bluh( $arg1 )
   {
       echo Called: .__FUNCTION__.( $arg1 )\n;
   }

   static function getBlah( $arg1 )
   {
       return new Foo( self::CONSTRUCT_BLAH, $arg1 );
   }

   static function getBleh( $arg1 )
   {
       return new Foo( self::CONSTRUCT_BLEH, $arg1 );
   }

   static function getBluh( $arg1 )
   {
       return new Foo( self::CONSTRUCT_BLUH, $arg1 );
   }
 }

 $obj = Foo::getBlah( 'blah' );
 $obj = Foo::getBleh( 'bleh' );
 $obj = Foo::getBluh( 'bluh' );

 ?

 Cheers,
 Rob.
 --
 http://www.interjinn.com
 Application and Templating Framework for PHP

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Re: [PHP] Properly handling multiple constructors.

[Peter Lind]

On 24 March 2010 16:09, Robert Cummings rob...@interjinn.com wrote:


 Peter Lind wrote:

 On 24 March 2010 15:33, Robert Cummings rob...@interjinn.com wrote:

 Peter Lind wrote:

 One of the main points of the OP was that you can document the code
 properly. Your example doesn't allow for nice docblocks in any way, as
 you'll either have to param points or a whole lot of noise.

 I dunno, seems highly documentable to me. Each route is handled by it's
 own
 method with the parameters being fully declared in the handler method's
 signature.

 Only problem is the OP wanted to be able to created objects with
 variable amounts of arguments. I.e. passing just one argument to the
 constructor wasn't an option, far as I could tell. That's why he was
 looking at c++/c# overloading: creating a constructor for each
 scenario because the amount and kind of arguments varied.

 Which means that the docblock for your constructor will look something
 like

 /**
  * dynamic constructor
  *
  * @param int $constructor_type
  * @param string|array|object|whatever_you_could_think_to_throw_at_it
 $something
  * @param string|array|object|whatever_you_could_think_to_throw_at_it
 $something this is optional
  * @param etc
  *
  * @access public
  * @return void
  */

 Actually, I would write it more like the following:

 /**
  * dynamic constructor that delegates construction and parameters to a
  * registered alternate constructor. See specific constructors for
  * supported parameters.
  *
  * @param int $constructor_type
  * @param mixed $param,
  *
  * @access public
  * @return void
  */

 The ,... is a supported syntax. Then I'd add the appropriate docblock for
 the alternate constructors.

It might be but in effect the documentation you're left with is vague
and has double the amount of documentation lookups, to find out which
parameters you can pass. Using a separate object to create the one you
want avoids this.

However, which solution fits the problem best is determined by the
angle you're looking from. If you want to avoid extra classes, having
a constructor like you're supposing is probably the best idea.

 Cheers,
 Rob.
 --
 http://www.interjinn.com
 Application and Templating Framework for PHP




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Re: [PHP] Properly handling multiple constructors.

[Peter Lind]

On 24 March 2010 16:23, Robert Cummings rob...@interjinn.com wrote:
 Peter Lind wrote:

 On 24 March 2010 16:09, Robert Cummings rob...@interjinn.com wrote:

 Peter Lind wrote:

 On 24 March 2010 15:33, Robert Cummings rob...@interjinn.com wrote:

 Peter Lind wrote:

 One of the main points of the OP was that you can document the code
 properly. Your example doesn't allow for nice docblocks in any way, as
 you'll either have to param points or a whole lot of noise.

 I dunno, seems highly documentable to me. Each route is handled by it's
 own
 method with the parameters being fully declared in the handler method's
 signature.

 Only problem is the OP wanted to be able to created objects with
 variable amounts of arguments. I.e. passing just one argument to the
 constructor wasn't an option, far as I could tell. That's why he was
 looking at c++/c# overloading: creating a constructor for each
 scenario because the amount and kind of arguments varied.

 Which means that the docblock for your constructor will look something
 like

 /**
  * dynamic constructor
  *
  * @param int $constructor_type
  * @param string|array|object|whatever_you_could_think_to_throw_at_it
 $something
  * @param string|array|object|whatever_you_could_think_to_throw_at_it
 $something this is optional
  * @param etc
  *
  * @access public
  * @return void
  */

 Actually, I would write it more like the following:

 /**
  * dynamic constructor that delegates construction and parameters to a
  * registered alternate constructor. See specific constructors for
  * supported parameters.
  *
  * @param int $constructor_type
  * @param mixed $param,
  *
  * @access public
  * @return void
  */

 The ,... is a supported syntax. Then I'd add the appropriate docblock for
 the alternate constructors.

 It might be but in effect the documentation you're left with is vague
 and has double the amount of documentation lookups, to find out which
 parameters you can pass. Using a separate object to create the one you
 want avoids this.

 But then you need to keep track of many different classes/objects rather
 than a single. You also run into confusion as to what the difference is when
 really they are the same, just built differently. In this context you have
 even more document points to review since you must read the class
 information in addition to the method signature. Also using a separate class
 just to facilitate a different constructor seems abusive of class semantics
 since the objects are intended to be identical, just built differently. I
 would find this more unwieldy to deal with in an environement than just
 viewing the alternate methods.

Yes, you have to keep track of two different objects instead of one.
Managing complexity by delegating responsibility is normally a good
thing. And no, there is no confusion: you're building the same object
in different ways, so you're getting the same object, not one that
merely looks the same. As for abusing class semantics ... I don't see
it. Using separate classes for different things is what OOP is about.
If your constructor is trying to do 15 different things you're
designing it wrong - methods shouldn't have to rely upon massive
switches or the equivalent done using foreach loops and arrays.
 As for more documentation: You'd have two class docblocks plus a
docblock for each build method, so I suppose you're right, that is one
extra docblock.

 However, which solution fits the problem best is determined by the
 angle you're looking from. If you want to avoid extra classes, having
 a constructor like you're supposing is probably the best idea.

 Extra classes is also more code, probably more files (if you put them in
 separate files), more points of management.

Yes. What does your code look like? One big file containing everything?

 Cheers,
 Rob.
 --
 http://www.interjinn.com
 Application and Templating Framework for PHP




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Re: [PHP] Properly handling multiple constructors.

[Peter Lind]

On 24 March 2010 16:48, Robert Cummings rob...@interjinn.com wrote:
 Peter Lind wrote:

 The ,... is a supported syntax. Then I'd add the appropriate docblock
 for
 the alternate constructors.

 It might be but in effect the documentation you're left with is vague
 and has double the amount of documentation lookups, to find out which
 parameters you can pass. Using a separate object to create the one you
 want avoids this.



 But then you need to keep track of many different classes/objects rather
 than a single. You also run into confusion as to what the difference is
 when
 really they are the same, just built differently. In this context you
 have
 even more document points to review since you must read the class
 information in addition to the method signature. Also using a separate
 class
 just to facilitate a different constructor seems abusive of class
 semantics
 since the objects are intended to be identical, just built differently. I
 would find this more unwieldy to deal with in an environement than just
 viewing the alternate methods.

 Yes, you have to keep track of two different objects instead of one.
 Managing complexity by delegating responsibility is normally a good
 thing.

 Absolutely, delegating responsibility to manage complexity is very good. My
 proposed solution does this.

 And no, there is no confusion: you're building the same object
 in different ways, so you're getting the same object, not one that
 merely looks the same.

 No, you're getting different objects. If they come from different classes
 then they are different. Yes they may be subclasses, but the OP indicated
 they differ only by how they are built. Adding 10 different subclasses just
 to facilitate constructor overloading seems egregious, especially if the
 object already has logical subclasses.

As I suspected, you didn't understand what I meant. The builder
pattern lets you build complex objects in steps, separating out
complexity. It's equally well suited to building one object as many
objects and what I had in mind was a simplified builder/factory.

Which means you have:

class ObjectBuilder
class Object

where ObjectBuilder comes with several different ways of building
Object. That's two objects, not the list of objects extending
something you posted.

    class Dog
    class Dog_construct1 extends Dog
    class Dog_construct2 extends Dog
    class Dog_construct3 extends Dog
    class Dog_construct4 extends Dog

    class Dalmation extends Dog
    class Dalmation_construct1 extends Dog_construct1
    class Dalmation_construct2 extends Dog_construct2
    class Dalmation_construct3 extends Dog_construct3
    class Dalmation_construct4 extends Dog_construct4

 But now Dalmation_construct1 isn't related to Dalmation... or do you propose
 the following:

    class Dalmation extends Dalmation
    class Dalmation_construct1 extends Dalmation
    class Dalmation_construct2 extends Dalmation
    class Dalmation_construct3 extends Dalmation
    class Dalmation_construct4 extends Dalmation

 But now Dalmation_construct1 isn't related Dog_construct1. This seems
 problematic from a design perspective unless I'm missing something in your
 proposal.

  As for abusing class semantics ... I don't see

 it. Using separate classes for different things is what OOP is about.
 If your constructor is trying to do 15 different things you're
 designing it wrong - methods shouldn't have to rely upon massive
 switches or the equivalent done using foreach loops and arrays.

 Sorry, switches, foreach, and isset are not equivalent. My approach is O( lg
 n ). Foreach and switches are O( n ) to find a candidate. Additionally, my
 constructor does 1 thing, it delegates to the appropriate constructor which
 does one thing also... builds the object according to intent.

Yes, your constructor does one thing, which is indirectly related to
constructing instead of carrying out the actual constructing. I prefer
constructors to construct something, but that's a matter of preference
I expect.

  As for more documentation: You'd have two class docblocks plus a
 docblock for each build method, so I suppose you're right, that is one
 extra docblock.

 However, which solution fits the problem best is determined by the
 angle you're looking from. If you want to avoid extra classes, having
 a constructor like you're supposing is probably the best idea.

 Extra classes is also more code, probably more files (if you put them in
 separate files), more points of management.

 Yes. What does your code look like? One big file containing everything?

 No, I said probably because I put classes in separate files. I was saying
 there is probably another added maintenance headache of all these new class
 files.

There would be if one were to use your scheme of subclassing. What I
proposed doesn't do that in any way, so there's not much of a
maintenance headache.

Anyway, all this is theoretical seeing as you can equally well use a
set of static methods

Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 25 March 2010 19:37, Tommy Pham tommy...@gmail.com wrote:
 On Thu, Mar 25, 2010 at 3:55 AM, Per Jessen p...@computer.org wrote:
 Tommy Pham wrote:

 On Thu, Mar 25, 2010 at 1:46 AM, Per Jessen p...@computer.org wrote:
 * If you could implement threads and run those same queries in 2+
 threads, the total time saved from queries execution is 1/2 sec or
 more, which is pass along as the total response time reduced.  Is it
 worth it for you implement threads if you're a speed freak?

 Use mysqlnd - asynchronous mysql queries.


 You're assuming that everyone in the PHP world uses MySQL 4.1 or
 newer.  What about those who don't?

 They don't get to use threading, nor asynchronous mysql queries.

 Come on, you're asking about a future feature in PHP 7.x , but would
 like to support someone who is seriously backlevel on mysql??


 --
 Per Jessen, Zürich (16.9°C)


 I'm not talking about MySQL 4.0 or older.  I'm talking about other
 RDBMS.  I think you should open your eyes a bit wider and take a look
 at the bigger picture (Firebird, MSSQL, Oracle, PostgreSQL, etc).

http://www.php.net/manual/en/function.pg-send-query.php

Looks to me like the PHP postgresql library already handles that. Not
to mention: you're not presenting an argument for threads, you're
presenting an argument for implementing asynchronous queries in the
other DBMS libraries.

Of course, the problem could also be solved by introducing threads in
PHP. I'd personally guess modifying DBMS libraries would be less
costly, but as I haven't been involved in writing the PHP code my
guess isn't worth much.

Regards
Peter


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Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 25 March 2010 20:09, Tommy Pham tommy...@gmail.com wrote:
 On Thu, Mar 25, 2010 at 12:02 PM, Peter Lind peter.e.l...@gmail.com wrote:
 On 25 March 2010 19:37, Tommy Pham tommy...@gmail.com wrote:
 On Thu, Mar 25, 2010 at 3:55 AM, Per Jessen p...@computer.org wrote:
 Tommy Pham wrote:

 On Thu, Mar 25, 2010 at 1:46 AM, Per Jessen p...@computer.org wrote:
 * If you could implement threads and run those same queries in 2+
 threads, the total time saved from queries execution is 1/2 sec or
 more, which is pass along as the total response time reduced.  Is it
 worth it for you implement threads if you're a speed freak?

 Use mysqlnd - asynchronous mysql queries.


 You're assuming that everyone in the PHP world uses MySQL 4.1 or
 newer.  What about those who don't?

 They don't get to use threading, nor asynchronous mysql queries.

 Come on, you're asking about a future feature in PHP 7.x , but would
 like to support someone who is seriously backlevel on mysql??


 --
 Per Jessen, Zürich (16.9°C)


 I'm not talking about MySQL 4.0 or older.  I'm talking about other
 RDBMS.  I think you should open your eyes a bit wider and take a look
 at the bigger picture (Firebird, MSSQL, Oracle, PostgreSQL, etc).

 http://www.php.net/manual/en/function.pg-send-query.php

 Looks to me like the PHP postgresql library already handles that. Not
 to mention: you're not presenting an argument for threads, you're
 presenting an argument for implementing asynchronous queries in the
 other DBMS libraries.

 Of course, the problem could also be solved by introducing threads in
 PHP. I'd personally guess modifying DBMS libraries would be less
 costly, but as I haven't been involved in writing the PHP code my
 guess isn't worth much.

 Regards
 Peter


 I'm presenting the argument for threading.  Per is presenting the work
 around using asynchronous queries via mysqlnd.  I did read that link a
 few days ago, Although the user can send multiple queries at once,
 multiple queries cannot be sent over a busy connection. If a query is
 sent while the connection is busy, it waits until the last query is
 finished and discards all its results.  Which sounds like threads -
 multiple connections to not run into that problem.


Have you looked into what it would cost in development to improve the
library? Have you compared that to the cost in development to
introduce threads into PHP? No, I don't think you're presenting the
argument for threading - but I don't expect you to see it that way.

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Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 25 March 2010 20:19, Tommy Pham tommy...@gmail.com wrote:
 Aren't all feature requests must be analyzed the same way?  Example,
 namespace, how many of us actually uses it now when there is an
 alternative solution- subfolders - that we've been using since who
 knows how long.  I don't know if threads was asked a feature prior
 namespace was implemented.


Yes, you're right. But feature requests are not equal: some present a
bigger payoff than others, and some will be more problematic to
implement than others. If a given language can solve the problems it
meets based on it's current structure, should you necessarily
implement new shiny features, that may present problems?

I'm not against threads in PHP per se ... I just haven't seen a very
convincing reason for them yet, which is why I'm not very positive
about the thing. The DB scenario could be handled without threads and
current libraries could be improved ... and as long as that's cheaper
than implementing threads, then - personally - I'd need to see more
powerful reasons for threads.

Luckily, I have no say in the development of PHP, so I won't get in
anyone's way should they choose to implement threads :)


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Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 25 March 2010 20:59, Tommy Pham tommy...@gmail.com wrote:
 On Thu, Mar 25, 2010 at 12:28 PM, Peter Lind peter.e.l...@gmail.com wrote:
 On 25 March 2010 20:19, Tommy Pham tommy...@gmail.com wrote:
 Aren't all feature requests must be analyzed the same way?  Example,
 namespace, how many of us actually uses it now when there is an
 alternative solution- subfolders - that we've been using since who
 knows how long.  I don't know if threads was asked a feature prior
 namespace was implemented.


 Yes, you're right. But feature requests are not equal: some present a
 bigger payoff than others, and some will be more problematic to
 implement than others. If a given language can solve the problems it
 meets based on it's current structure, should you necessarily
 implement new shiny features, that may present problems?

 I'm not against threads in PHP per se ... I just haven't seen a very
 convincing reason for them yet, which is why I'm not very positive
 about the thing. The DB scenario could be handled without threads and
 current libraries could be improved ... and as long as that's cheaper
 than implementing threads, then - personally - I'd need to see more
 powerful reasons for threads.

 Luckily, I have no say in the development of PHP, so I won't get in
 anyone's way should they choose to implement threads :)



 Here's my analysis, let's say that you have 1000 requests / second on
 the web server.  Each request has multiqueries which take a total of 1
 second to complete.  In that one second, how many of those 1000 arrive
 at the same time (that one instant of micro/nano second)?  You see how
 threads come in?  If you have threads that are able finish the
 requests that come in that instant and able to complete them before
 the next batch of requests in that same second, wouldn't you agree
 then that you're delivering faster response time to all your users?


That sounds like your webserver spawning new processes dealing with
requests ... possibly combined with connection pooling and
asynchronous queries and load balancing, etc, etc. So no, I'm not
convinced that PHP with threads would actually deliver much faster
than a properly built setup that makes good usage of technology you'll
have to use anyway.

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Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 25 March 2010 22:51, Lester Caine les...@lsces.co.uk wrote:
 Per Jessen wrote:

 Tommy Pham wrote:

 I'm presenting the argument for threading.  Per is presenting the work
 around using asynchronous queries via mysqlnd.  I did read that link a
 few days ago, Although the user can send multiple queries at once,
 multiple queries cannot be sent over a busy connection. If a query is
 sent while the connection is busy, it waits until the last query is
 finished and discards all its results.  Which sounds like threads -
 multiple connections to not run into that problem.

 You must have read the wrong page.  This is NOT about multiple queries,
 it's about _asynchronous_ queries.

 The only problem here is what the database client can handle. If it can only
 handle one active query, then that is all that can be used. It can be
 started asynchronously and then you come back to pick up the results later,
 and so you can be formating the page ready to insert the results. PDO
 requires that you start a different connection in a different transaction
 for each of these queries, but that is another hot potato. Running 10
 asynchronous queries would require 10 connections as that is how the
 database end works. Adding threading to PHP is going to make no difference?

Actually, this sounds very close to having 10 threads each opening a
connection to the database and running the query ... which was the
solution to the scenario presented, if memory serves.

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Re: [PHP] Will PHP ever grow up and have threading?

[Peter Lind]

On 25 March 2010 23:23, Tommy Pham tommy...@gmail.com wrote:

 There's the code example from that same link.  You may have executed
 the queries asynchronously, but the process of the results are still
 serial.  Let's face it, all of our processing of queries are not a
 simple echo.  We iterate/loop through the results and display them in
 the desired format.  Having execute the query and the processing of
 the result in threads/parallel, you get the real performance boost
 which I've been trying to convey the concept of serial versus
 parallel.

Actually, you haven't mentioned the processing as part of what the
threads do until now. I see your point though: if you split that part
off, you might gain some performance, that would otherwise be hard to
get at.
 I wonder though, if the performance is worth it in the tradeoff for
the maintenance nightmare it is when you split out content processing
between 10 different threads. I wouldn't personally touch it unless I
had no other option, but that's just my opinion.

Anyway, I don't think either of us will change point of view much at
this point - so we should probably just give the mailing list a rest
by now. Thanks for the posts, it's been interesting to read :)

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Re: [PHP] Allowing multiple, simultaneous, non-blocking queries.

[Peter Lind]

Hi Richard

At the end of discussion, the best bet for something that approaches
a threaded version of multiple queries would be something like:
1. open connection to database
2. issue query using asynchronous call (mysql and postgresql support
this, haven't checked the others)
3. pick up result when ready

To get the threaded-ness, just open a connection per query you want to
run asynchronous and pick it up when you're ready for it - i.e.
iterate over steps 1-2, then do step 3 when things are ready.

Regards
Peter

On 26 March 2010 12:45, Richard Quadling rquadl...@googlemail.com wrote:
 Hi.

 As I understand things, one of the main issues in the When will PHP
 grow up thread was the ability to issue multiple queries in parallel
 via some sort of threading mechanism.

 Due to the complete overhaul required of the core and extensions to
 support userland threading, the general consensus was a big fat No!.


 As I understand things, it is possible, in userland, to use multiple,
 non-blocking sockets for file I/O (something I don't seem to be able
 to achieve on Windows http://bugs.php.net/bug.php?id=47918).

 Can this process be leveraged to allow for non-blocking queries?

 Being able to throw out multiple non-blocking queries would allow for
 the queries in parallel issue.

 My understanding is that at the base level, all queries are running on
 a socket in some way, so isn't this facility nearly already there in
 some way?


 Regards,

 Richard.

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Re: [PHP] Re: optimizing PHP for microseconds

[Peter Lind]

That's impossible to answer given the brief layout of what you've described.

However, rule of thumb: optimizing for microseconds only makes sense
when the microseconds together make up a significant amount of time.
An example might be in order:

for ($i = 0; $i  count($stuff); $i++)
{
  // do other stuffs
}

The above loop is NOT optimal (as most people will tell you) because
you'll be doing a count() every loop. However, there's an enormous
difference between doing 100 counts and 1.000.000 counts. Microseconds
only count when there's enough of them to make up seconds.

The best thing to do is adopt the normal good coding standards: don't
using functions in loops like the above, for instance.

However, be skeptic about tips: single-quotes are not faster than
double-quotes, for instance.

Regards
Peter

On 29 March 2010 10:28, Bastien Helders eldroskan...@gmail.com wrote:
 I have a question as a relatively novice PHP developper.

 Let's say you have this Intranet web application, that deals with the
 generation of file bundles that could become quite large (let say in the 800
 MB) after some kind of selection process. It should be available to many
 users on this Intranet, but shouldn't require any installation. Would it be
 a case where optimizing for microseconds would be recommended? Or would PHP
 not be the language of choice?

 I'm not asking to prove that there could be corner case where it could be
 useful, but I am genuinely interested as I am in the development of such a
 project, and increasing the performance of this web application is one of my
 goal.

 2010/3/28 Nathan Rixham nrix...@gmail.com

 mngghh, okay, consider me baited.

 Daevid Vincent wrote:
  Per Jessen wrote:
  Tommy Pham wrote:
 
  (I remember a list member, not mentioning his name, does optimization
  of PHP coding for just microseconds.  Do you think how much more he'd
  benefit from this?)
  Anyone who optimizes PHP for microseconds has lost touch with reality -
  or at least forgotten that he or she is using an interpreted language.
  But sometimes it's just plain fun to do it here on the list with
  everyone further optimizing the last optimized snippet :)
 
  Cheers,
  Rob.
 
  Was that someone me? I do that. And if you don't, then you're the kind of
  person I would not hire (not saying that to sound mean). I use single
  quotes instead of double where applicable. I use -- instead of ++. I use
  $boolean = !$boolean to alternate (instead of mod() or other incrementing
  solutions). I use LIMIT 1 on select, update, delete where appropriate.
 I
  use the session to cache the user and even query results. I don't use
  bloated frameworks (like Symfony or Zend or Cake or whatever else tries
 to
  be one-size-fits-all). The list goes on.

 That's not optimization, at best it's just an awareness of PHP syntax
 and a vague awareness of how the syntax will ultimately be interpreted.

 Using LIMIT 1 is not optimizing it's just saying you only want one
 result returned, the SQL query could still take five hours to run if no
 indexes, a poorly normalised database, wrong datatypes, and joins all
 over the place.

 Using the session to cache the user is the only thing that comes
 anywhere near to application optimisation in all you've said; and
 frankly I would take to be pretty obvious and basic stuff (yet pointless
 in most scenario's where you have to cater for possible bans and
 de-authorisations) - storing query results in a session cache is only
 ever useful in one distinct scenario, when the results of that query are
 only valid for the owner of the session, and only for the duration of
 that session, nothing more, nothing less. This is a one in a million
 scenario.

 Bloated frameworks, most of the time they are not bloated, especially
 when you use them properly and only include what you need on a need to
 use basis; then the big framework can only be considered a class or two.
 Sure the codebase seems more bloated, but at runtime it's easily
 negated. You can use these frameworks for any size project, enterprise
 included, provided you appreciated the strengths and weaknesses of the
 full tech stack at your disposal. Further, especially on enterprise
 projects it makes sense to drop development time by using a common
 framework, and far more importantly, to have a code base developers know
 well and can hit the ground running with.

 Generally unless you have unlimited learning time and practically zero
 budget constraints frameworks like the ones you mentioned should always
 be used for large team enterprise applications, although perhaps
 something more modular like Zend is suited. They also cover your own
 back when you are the lead developer, because on the day when a more
 experienced developer than yourself joins the project and points out all
 your mistakes, you're going to feel pretty shite and odds are very high
 that the project will go sour, get fully re-written or you'll have to
 leave due to stress (of being

[PHP] SimpleXMLElement and gb2312 or big5

[Peter Pei]

I use the following code to get rss and parse it, but the code  
occasionally have issues with gb2312 or big-5 encoded feeds, and fails to  
parse them. However other times may appear just okay. Any thoughts? Maybe  
SimpleXMLElement is simply not meant for other language encodings...


$page = file_get_contents($rss);
try {
$feed = new SimpleXMLElement($page);

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[PHP] SimpleXMLElement occasionally fails to parse gb2312 or big5 feeds

[Peter Pei]

I use the following code to get rss and parse it, but the code  
occasionally have issues with gb2312 or big-5 encoded feeds, and fails to  
parse them. However other times may appear just okay. Any thoughts? Maybe  
SimpleXMLElement is simply not meant for other language encodings...


$page = file_get_contents($rss);
try {
$feed = new SimpleXMLElement($page);


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Re: [PHP] GetElementByClass?

[Peter Pei]

On Sat, 03 Apr 2010 08:58:44 -0600, Ashley Sheridan  
a...@ashleysheridan.co.uk wrote:



On Sat, 2010-04-03 at 10:29 -0400, tedd wrote:


Hi gang:

Here's the problem.

I have 184 HTML pages in a directory and each page contain a
question. The question is noted in the HTML DOM like so:

p class=question
   Who is Roger Rabbit?
/p

My question is -- how can I extract the string Who is Roger Rabbit?
from each page using php? You see, I want to store the questions in a
database without having to re-type, or cut/paste, each one.

Now, I can extract each question by using javascript --

document.getElementById(question).innerHTML;

-- and stepping through each page, but I don't want to use javascript  
for this.


I have not found/created a working example of this using PHP. I tried
using PHP's getElementByID(), but that requires the target file to be
valid xml and the string to be contained within an ID and not a
class. These pages do not support either requirement.

Additionally, I realize that I can load the files and parse out what
is between the p tags, but I was hoping for a GetElementByClass
way to do this.

So, is there one?

Thanks,

tedd
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I don't think there is a getElementsByClass function. HTML5 is proposing
one, but that will most likely be implemented in Javascript before PHP
Dom. There is a way to tidy up the HTML to make it XHTML, but I'm not
sure what it is. If you know roughly where in the document the HTML
snippet is you can use XPath to grab it.

Failing that, what about a regex? It shouldn't be too hard to write a
regex to match your example above.

Thanks,
Ash
http://www.ashleysheridan.co.uk




Somejavascript engine already support GetElementByClass, for example Opera  
does.


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Re: [PHP] GetElementByClass?

[Peter Pei]

No javascript's getElementByID() won't work here. As question is a  
class, not an ID. But like what was mentioned here, you can use  
getElementByClass() with Opera, and that will work.


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Re: [PHP] GetElementByClass?

[Peter Pei]

Yes, because Opera is pretty much leading the way with its HTML5
support. Not even Firefox supports as much as Opera does.

Thanks,
Ash
http://www.ashleysheridan.co.uk




Opera 10.10 is a very nice version, but 10.50 could be quite slow with  
some web pages.


I still remember that once upon a time, Opera was so broken, and it also  
showed you that little window for ads ;-)


I love to see opera get a chance, but its market share is not moving even  
with the release Opera 10.

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Re: [PHP] GetElementByClass?

[Peter Pei]

Why don't you just use REGEX? I don't know any possibility to easily
process contents which are not valid XML/XHTML just because there's no
library to load such stuff (but put me in right there).

I'm not an expert of REGEX, but I think the following would do it:
/\p\s*class\=\question\\s*\(.*)\\/p\


(my first contribute here, I beg your pardon if something went wrong)

Regards,

Valentin Dreismann



regexp is the best fit here and not much effort to do. Especially consider  
this is only for one time use.

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Re: [PHP] GetElementByClass?

[Peter Pei]

Hi

You could replace the class with id and then go on with JavaScript.

A possible better way are regular expressions...


Greetz
Piero


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Yes, and jquery is hosted on Microsoft CDN, don't even need to download  
just plug the link in.

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Re: [PHP] GetElementByClass?

[Peter Pei]

I think Tedds main reason not to use Javascript is that he needs it to
be done on the server rather than the client machine.


ps. please use bottom posting on the list.

Thanks,
Ash
http://www.ashleysheridan.co.uk




But he also mentioned that he wanted to avoid copy and paste... it does  
give me the feeling that this is a one time thing, and he just wanted to  
extract the questions.


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Re: [PHP] GetElementByClass?

[Peter Pei]

On Sat, 03 Apr 2010 09:21:17 -0600, Ashley Sheridan  
a...@ashleysheridan.co.uk wrote:



s, first browser to have tabs, first to have that
odd homepage with thumbnails of y


Talking about Opera's 'speed dial... I downloaded safari yesterday (which  
I didn't like last time I used it), it now has the same kind of page but  
with sort of 3D looking.


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Re: [PHP] Re: array or list of objects of different types

[Peter Pei]

var_dump( array( true , 12 , php already does this ) );

array(3) {
   [0]=  bool(true)
   [1]=  int(12)
   [2]=  string(21) php already does this
}

:)



Yeah. But this feature of PHP is a boon if used carefully and a curse if  
careless. You can get AMAZING results if you're not careful to check the  
data types ;)




And that's why language like C# and java supports  to restrict the type  
of data a collection can hold.

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Re: [PHP] GetElementByClass?

[Peter Pei]

Somejavascript engine already support GetElementByClass, for example  
Opera does.


My example shows how, namely:

document.getElementById(question).innerHTML;

will return the value within the class.

Cheers,

tedd



In your original post, you said the data you had was:

p class=question
   Who is Roger Rabbit?
/p

Does that still stand? or there was a typo, and class should really be ID?
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Re: [PHP] GetElementByClass?

[Peter Pei]

Sort of.

Like I said, the folling will work:

document.getElementById(question).innerHTML;

While you are using a getElementById, which returns an ID, but adding  
.innerHTML will return the class value.


Try it.

Cheers,

tedd


No, this will not work, if it appeared working, please re-check your data,  
and make sure you didn't miss anything...


Run the following in any browser, and see whether you get a pop up, then  
change class= to ID=, and run it again.

body onload='alert(document.getElementById(question).innerHTML)'
p class=question
   Who is Roger Rabbit?
/p
/body

innerHTML works off an object, and it does nothing if youu cannot even  
locate the object in the first place.


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Re: [PHP] GetElementByClass?

[Peter Pei]

It might have worked in Internet Explorer, as for a while that browser
got confused over the class and id if two different elements on a page
had the same class and id values.

Thanks,
Ash
http://www.ashleysheridan.co.uk




IE and Opera were the two I tested with.
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Re: [PHP] GetElementByClass?

[Peter Pei]

?php
// here is where you load a single file or change to iterate over a
// directory of files
$oDomDoc = DOMDocument::loadHTMLFile('./tedd.html');

// here is where you search for the question sections of each file
$oDomXpath = new DOMXPath($oDomDoc);
$oNodeList = $oDomXpath-query(//p...@class='question']);

// here is where you extract the question sections of each file
foreach($oNodeList as $oDomNode)
var_dump($oDomNode-nodeValue);


should be trivial to expand that to work w/ multiple files.




Now, I can extract each question by using javascript --

document.getElementById(question).innerHTML;



tedd, are you slipping?  i thought you were searching by the class
attribute, lol.

-nathan


Beautiful!

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Re: [PHP] Collections / Static typing - was array or list of objects of different types

[Peter Pei]

On Sat, 03 Apr 2010 11:30:36 -0600, Nathan Rixham nrix...@gmail.com  
wrote:



them in a google code project or suchlike.
They'll obviously never be as fast as Java/C but they do allow for
static typing of collections using primitive types


That will be wonderful.

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Re: [PHP] Re: Constructor usage

[Peter Pei]

On Sun, 04 Apr 2010 17:46:19 -0600, Nathan Rixham nrix...@gmail.com  
wrote:



Larry Garfield wrote:

Hi folks.  Somewhat philosophical question here.

I have heard, although not confirmed, that the trend in the Java world  
in the
past several years has been away from constructors.  That is, rather  
than

this:

class Foo {
  public void Foo(Object a, Object b, Object c) {}
}

Foo f = new Foo(a, b, c);

The preference is now for this:

class Foo {
  public void setA(Object a) {}
  public void setB(Object b) {}
  public void setC(Object c) {}
}

Foo f = new Foo(a, b, c);
f.setA(a);
f.setB(b);
f.setC(c);

I suppose there is some logic there when working with factories, which  
you
should be doing in general.  However, I don't know if that makes the  
same

degree of sense in PHP, even though the OO models are quite similar.

So, I'll throw the question out.  Who uses example 1 above vs. example  
2 when

writing dependency-injection-based OOP?  Why?  What trade-offs have you
encountered, and was it worth it?




Other than theoretical reasons, one practical reason to have getters and  
setters is to make live easier for IDE's.


I never thought the above two are in conflict. Usually parameterized  
constructors are provided along with getters and setters - each is used  
for good reasons.


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Re: [PHP] Re: Logical reason for strtotime('east') and strtotime('west') returning valid results?

[Peter Lind]

On a related note: does anyone know why

php -r echo date('Y-m-d H:i:s', strtotime('a'));

happily outputs a valid timestamp? And why all other letters work as
well (but only one character)? I'm sure there's a good reason for it,
it just completely escapes me right now :)

Regards
Peter

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Re: [PHP] Little php code - error

[Peter Lind]

On 8 April 2010 16:30, David Otton phpm...@jawbone.freeserve.co.uk wrote:
 On 8 April 2010 15:21, Juan j...@rodriguezmonti.com.ar wrote:

 The structure is pretty easy to understand, however I'm not able to
 solve this. Could you tell me why I'm not able to run this code.

 Your else has a condition on it

 } else (empty($b) and empty($c)) {

 Should be

 } else {

Unless he actually wants to do something with that condition, in which
case it should be an elseif.

 BTW, the and is fine.

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Re: [PHP] another useless message.

[Peter Lind]

On 9 April 2010 12:20, Rene Veerman rene7...@gmail.com wrote:
 lolz :)) u try to be nice, and this is what u get?!?! :-D


Rene, it's nice of you to post messages on the availability of some OS
tools. However, you should also be aware that it's a minority of
people on this list that use those tools - which in effect means that
you're posting stuff that at best is irrelevant to a lot of people and
at worst is seen as spam by those people.

That said, there can be little doubt that the response you got went a
tad too far - some netiquette lessons would be useful, I think.


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Re: [PHP] 404 redirects stolen by provider

[Peter Lind]

On 9 April 2010 22:20, Merlin Morgenstern merli...@fastmail.fm wrote:
 This sounds like the best solution to me. The only problem is that my regex
 knowledge is pretty limited. The command:
 RewriteRule ^(.+) /subapp_members/search_user.php


The above rule will try to redirect everything to
/subapp_members/search_user.php. If you're looking to allow
example.com/username, then use something like:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /subapp_members/search_user.php?member=$1 [L]

This is likely to not do what you want from it, but it's the closest I
can guess as to what you want.

Have a read of http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html

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Re: [PHP] 404 redirects stolen by provider

[Peter Lind]

On 9 April 2010 23:08, Merlin Morgenstern merli...@fastmail.fm wrote:

 Am 09.04.2010 22:58, schrieb Peter Lind:

 On 9 April 2010 22:20, Merlin Morgensternmerli...@fastmail.fm  wrote:


 This sounds like the best solution to me. The only problem is that my
 regex
 knowledge is pretty limited. The command:
 RewriteRule ^(.+) /subapp_members/search_user.php



 The above rule will try to redirect everything to
 /subapp_members/search_user.php. If you're looking to allow
 example.com/username, then use something like:

 RewriteCond %{REQUEST_FILENAME} !-f
 RewriteCond %{REQUEST_FILENAME} !-d
 RewriteRule ^(.*)$ /subapp_members/search_user.php?member=$1 [L]

 This is likely to not do what you want from it, but it's the closest I
 can guess as to what you want.

 Have a read of http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html




 This will not work, as I do have a bunch of other redirects inside the page.

 What might work is a rule, that redirects urls that do not have a full stop
 or slash inside. Is this possible? My regex knowledge is unfortunatelly
 pretty limited.


Try:

RewriteRule ^([^./]+)$ /yourfile.php?variable=$1 [L]

Apart from that, rewrite rules work in order. If a rule above this
triggers and has the L flag, those below won't get processed.

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Re: [PHP] Mail Function Problem

[Peter Lind]

On 12 April 2010 05:22, Kevin Kinsey k...@daleco.biz wrote:

 Thanks to the worldwide brotherhood of crooks known as spammers,
 sending e-mail these days isn't nearly as easy as PHP makes it look.
 You might wanna look into an errors-to header to help debug any
 problems with sender authorization, bad ports, etc.


Along these lines: there's a chance that sending a mail from yourself,
to yourself, through PHP like this, will cause mail servers to think
it's spam. For testing email sending, normal scenarios are better
(i.e. send an email to another account).

Regards
Peter

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Re: [PHP] Solution

[Peter Lind]

On 13 April 2010 00:04, Gary gwp...@ptd.net wrote:
 For those that were looking to see a solution, this is what I have come up
 with.  It was pointed out on another board (MySQL) that inserting multiple
 in one script is probably prohibited because of security reasons.

 What I did was open the connection, insert into the table, close the
 connection, close the php script, then start over again.  This is the code:

 $dbc=mysqli_connect('localhost','root','','test')or die('Error connecting to
 MySQL server');

 $query=INSERT INTO name(fname, lname).VALUES('$fname','$lname');

 $result=mysqli_query($dbc, $query)
 or die('Error querying database.');

 mysqli_close($dbc);
 ?

 ?php

 $dbc=mysqli_connect('localhost','root','','test')or die('Error connecting to
 MySQL server');
 $query=INSERT INTO address (street, town, state,
 zip).VALUES('$street','$town','$state','$zip');

 $result=mysqli_query($dbc, $query)
 or die('Error querying database.');

 mysqli_close($dbc);

 ?

 It seems a little redundant for PHP, however it seems to work.

 Thank you to everyone that responded.  If by the way someone sees an issue
 with this solution, I would love to read it.

Off the top of my head: just reuse the connection. There's no need to
close it, then reopen it. The only security problem you're facing is
that you cannot send multiple queries in *the same string*[1]. So send
the queries one by one, but in the same script, using the same
connection.

1. The reason this is a security concern is that otherwise, should
someone manage to inject sql into your query, they could drop in a
semi-colon and then start a new query. By not allowing this, a lot of
bad injections are by default ruled out.

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Re: [PHP] Saving form data into session before leaving a page

[Peter Lind]

On 13 April 2010 15:20, Merlin Morgenstern merli...@fastmail.fm wrote:
 Hello everybody,

 I have form where users enter data to be saved in a db.

 How can I make php save the form data into a session before the user leaves
 the page without pressing the submit button? Some members leave the page and
 return afterwards wondering where their already entered data is.

 Any ideas how to save into php session data before someone leaves the page?

Use ajax: send a query to the server a couple of seconds after the
user has last updated the form.

 Thank you for any hint,

 Merlin

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Re: [PHP] Saving form data into session before leaving a page

[Peter Lind]

On 13 April 2010 17:27, Paul M Foster pa...@quillandmouse.com wrote:
 On Tue, Apr 13, 2010 at 03:20:23PM +0200, Merlin Morgenstern wrote:

 Hello everybody,

 I have form where users enter data to be saved in a db.

 How can I make php save the form data into a session before the user
 leaves the page without pressing the submit button? Some members leave
 the page and return afterwards wondering where their already entered
 data is.

 I hate to be a contrarian (not really), but there is a paradigm for
 using web forms. If you want the internet to save your data, you have to
 press the little button. If you don't, then it won't be saved. Not hard
 to figure out, not hard to do. If you have to go do something else while
 you're in the middle of a form, open a new tab/window and do it. When
 you come back to your original form, the data will still be there (but
 again, not *saved* until you hit the little button).

 Sorry, I just get cranky with people who won't follow the rules.

There are rules and then there's stupidity based on tradition. The
fact that websites previously threw away whatever work you had done
because you automatically got logged out of your session after half an
hour of typing does not mean you should call this a rule that should
be adhere to. Google figured it out and did so well: backup
automatically and let the user discard manually - not the other way
round that leads to lost work.

Apart from that, I note that the OP has seemingly managed to solve the
problem and all these emails are rather pointless.



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Re: [PHP] How define if javascript is on with php

[Peter Lind]

Javascript is client-side - only way to detect it is to have a page
send back information (post/get). What might work easiest is to have
jquery look for a given cookie upon page render, and if it doesn't
find it, then do an ajax call to the server. On the server side,
initiate a session for the user, set using_javascript to false and
update to true if you receive the ajax call.

That aside, why would you need to know in the backend if a user is
running javascript?

On 16 April 2010 13:50, Paulo-WORK pauloworkm...@googlemail.com wrote:
 Hello and thanks for any replies that this message may get.
 I have a issue to solve regarding PHP.
 My website relies heavlly  on jquery and does not dowgrade properly.
 I use codeigniter framework as this website has a backend .
 Is it possible to detect if js is on with php?
 And if so can it be set into a variable?
 Paulo Carvalho

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Re: [PHP] How define if javascript is on with php

[Peter Lind]

On 16 April 2010 13:54, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
 On Fri, 2010-04-16 at 12:50 +0100, Paulo-WORK wrote:

 Hello and thanks for any replies that this message may get.
 I have a issue to solve regarding PHP.
 My website relies heavlly  on jquery and does not dowgrade properly.
 I use codeigniter framework as this website has a backend .
 Is it possible to detect if js is on with php?
 And if so can it be set into a variable?
 Paulo Carvalho



 Nope, Javascript is on the client side and PHP is on the server. The
 server has very little knowledge of the client, and what information is
 sent (browser type, etc) can't be relied upon because browsers are
 capable of lying about what they are (in order to make themselves appear
 as IE for example)

 JQuery should allow the site to fail gracefully into a non-Javascript
 version, because of the way the framework is built.

 If this is something that you cannot easily do, why don't you just have
 PHP output some sort of default message that the site does not work
 without Javascript and use CSS to hide the rest of the site that
 requires script. Then, in JQuery, it's simple to hide the message and
 show the site with a couple of lines of code.

Or use the noscript tag


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Re: [PHP] limit to var_dump?

[Peter Lind]

There's a limit to how deep var_dump goes, at least if you're using
xdebug. Compare the output with that of print_r which is not limited
in the same way.

On 16 April 2010 16:15, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
 I'm seeing some strange behaviour with var_dump. Is there a limit to how
 many levels deep that var_dump can display?

 Basically, my object looks like this:

 object(Gantt)[1]
  public 'tasks' =
    array
      1 =
        object(Gantt_Task)[2]
          public 'name' = string 'task 1' (length 6)
          public 'predecessors' =
            array
              ...
      1.1 =
        object(Gantt_Task)[3]
          public 'name' = string 'task 1.1' (length 8)
          public 'predecessors' =
            array
              ...
      1.2 =
        object(Gantt_Task)[4]
          public 'name' = string 'task 1.2' (length 8)
          public 'predecessors' =
            array
              '1.1' = string 'f2s' (length 3)


 (full dump shortened, but it's no more than 4x the size of this output
 above, and the objects contain only short strings, small numbers and
 arrays of short strings and small numbers)

 However, when I var_dump the top-most object (the Gantt object) the
 predecessors array for Gantt_Task 1.2 just shows as '...'. If I var_dump
 that particular object, I can see that the correct array element does
 exist.

 Is this just a random bug I've found, or is there an intended limit to
 how complex and deep var_dump can go? Would it have anything to do with
 the fact that Gantt contains multiple instances of the Gantt_Task
 object?


 Thanks,
 Ash
 http://www.ashleysheridan.co.uk




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Re: [PHP] Replacing a special character

[Peter Lind]

On 18 April 2010 16:40, Phpster phps...@gmail.com wrote:


 On Apr 18, 2010, at 8:59 AM, Michael Stroh st...@astroh.org wrote:

 I have this form that people use to add entries into a MySQL database.
 Recently I've had some users insert − in their entries instead of - which is
 causing some issues with scripts down the line. I'd like to replace the −
 character with -.

 Originally I had something like

 $name = mysql_escape_string($_POST[name]);

 which would convert the offending character to #8722; before entering it
 into the database. It's this encoding that is causing the problems since
 some scripts send out emails with this entry in their subject line which
 looks messy.

 I've tried adding the following line after the previous line to help fix
 this issue, however, I just got another entry with the same problem.

 preg_replace('/#8722;/','-',$name);

 Any suggestions on how others would fix this problem? I'd just like to fix
 it before the entry hits the database instead of creating fixes on the other
 end of things.


 Cheers,
 Michael
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 One option is to send an HTML email which would have the email reader
 interpret that code correctly

 Bastien

Another option would be to use mysql_real_escape_string and make sure
that your code and the database are using utf-8. Then when the email
is sent, make sure that uses utf-8 as well.

Regards
Peter

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Re: [PHP] How to do i18n better?

[Peter Lind]

Consider checking out http://php.net/gettext - it's the set of
functions in PHP for i18n.

With regards to language switching, you should consider using a url
hierarchy for it, instead of just serving all pages with changing
content.

Regards
Peter

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Re: [PHP] Mail Function Using PEAR Issues

[Peter Lind]

Most, if not all, mail servers keep log files. You should look for the
log files to see if the mail server has sent your mail properly or is
experiencing problems (those may not feed back into PHP).

Regards
Peter

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Re: [PHP] Class constants

[Peter Lind]

On 19 April 2010 10:30, Gary . php-gene...@garydjones.name wrote:
 Should I be able to do this:

 class X
 {
  const FOO = 'foo';
  const FOOBAR = X::FOO . 'bar';

 ...
 }

 ?

 Because I can't. I get syntax error, unexpected '.', expecting ',' or
 ';'. I assume this is because the constants are like statics which
 can't be initialised by functions etc. but is there really any logic
 behind this?


It very often pays to read the PHP docs. From
http://pl.php.net/manual/en/language.oop5.constants.php :
The value must be a constant expression, not (for example) a
variable, a property, a result of a mathematical operation, or a
function call. 

So no, you shouldn't be able to do that.

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Re: [PHP] Class constants

[Peter Lind]

On 19 April 2010 14:24, Gary . php-gene...@garydjones.name wrote:
 On Mon, Apr 19, 2010 at 10:36 AM, Peter Lind wrote:
 On 19 April 2010 10:30, Gary wrote:
 Should I be able to do this:

 class X
 {
  const FOO = 'foo';
  const FOOBAR = X::FOO . 'bar';

 ...
 }

 So no, you shouldn't be able to do that.

 Okay. Why not?

Hate to ask, but did you at any point consider to read the PHP docs on
this? The bit I sent or what you could gather from the link posted?

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Re: [PHP] How to do i18n better?

[Peter Lind]

On 19 April 2010 15:56, Robert Cummings rob...@interjinn.com wrote:


 Unless you have namespaces (and I can't remember if they completed
 namespaced based functions) then don't use something so commuon as a
 function named underscore :/

 Cheers,
 Rob.


You might want to have a look at http://pl2.php.net/_

Regards
Peter


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Re: Re[2]: [PHP] How to do i18n better?

[Peter Lind]

On 19 April 2010 12:54, Andre Polykanine an...@oire.org wrote:
 Hello Peter,

 Regarding the URL switching suggested by you and Michiel, how do I do
 this if I have a rather complicated .htaccess file? For instance, a
 blog entry URL is formed as follows:
 http://oire.org/menelion/entry/190/ which is phisically
 http://oire.org/oire.php?o=menelione=190
 If I need to insert the locale somewhere inhere, sorry, I just don't
 know how to do that)

Switch your url structure to something like /en/menelion/entry/190/
and map that to /oire.php?o=menelione=190l=en

You can still default to one language and leave the language bit out
of that - but when switching to a language explicitly, having that as
part of the url helps.

Regards
Peter

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Re: [PHP] Class constants

[Peter Lind]

On 19 April 2010 16:18, Gary . php-gene...@garydjones.name wrote:
 On Mon, Apr 19, 2010 at 2:37 PM, Peter Lind peter.e.l...@gmail.com wrote:
 On 19 April 2010 14:24, Gary wrote:
 On Mon, Apr 19, 2010 at 10:36 AM, Peter Lind wrote:

 So no, you shouldn't be able to do that.

 Okay. Why not?

 Hate to ask, but did you at any point consider to read the PHP docs on
 this? The bit I sent or what you could gather from the link posted?

 Yes. The question remains.


Per the PHP manual: The value must be a constant expression. Is
something that depends on other classes, variables or functions
constant?
 If you're asking why a constant should be constant, I can only point
you to Ashleys answer or google.

Regards
Peter

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Re: [PHP] Array to csv or excel in php

[Peter Lind]

On 19 April 2010 17:00, Andrew Ballard aball...@gmail.com wrote:
 On Mon, Apr 19, 2010 at 9:45 AM, Manolis Vlachakis
 vlachakis.mano...@gmail.com wrote:
 hallo there everyone..
 i got an array from my database
 Help with Code 
 Tagshttp://www.daniweb.com/forums/misc-explaincode.html?TB_iframe=trueheight=400width=680
 *PHP Syntax* (Toggle Plain 
 Texthttp://www.daniweb.com/forums/post1194347.html#
 )


   1. $save=split([|;],$listOfItems);


 and what i want i s after making some changes to the attributes on the array
 above to export them on an csv or excel format
 but directly as a message to the browser ..
 i dont want it to be saved on the server ...
 what i cant understand from the examples i found on the net ..
 is how to handle the files and which are created cause
 i just have the array in a php file nothing more...


 another thing i have in mind is to export from the ldap server the files
 directly but seems to me as the wrong way to do it

 thanks


 Often when outputting csv, I usually do something like this:

 ?php

 $fp = fopen('php://output', 'w') or die('Could not open stream');

 foreach ($data as $row) {
    // Assumes that $row will be an array.
    // Manipulate the data in $row if necessary.
    fputcsv($fp, $row);
 }

 ?

An interesting idea. I'd do:

echo implode(',', $row);

regards
Peter

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Re: [PHP] Array to csv or excel in php

[Peter Lind]

On 19 April 2010 17:40, Andrew Ballard aball...@gmail.com wrote:
 On Mon, Apr 19, 2010 at 11:14 AM, Peter Lind peter.e.l...@gmail.com wrote:
 On 19 April 2010 17:00, Andrew Ballard aball...@gmail.com wrote:
 On Mon, Apr 19, 2010 at 9:45 AM, Manolis Vlachakis
   1. $save=split([|;],$listOfItems);

 and what i want i s after making some changes to the attributes on the 
 array
 above to export them on an csv or excel format
 but directly as a message to the browser ..
 i dont want it to be saved on the server ...

 Often when outputting csv, I usually do something like this:

 ?php

 $fp = fopen('php://output', 'w') or die('Could not open stream');

 foreach ($data as $row) {
    // Assumes that $row will be an array.
    // Manipulate the data in $row if necessary.
    fputcsv($fp, $row);
 }

 ?

 An interesting idea. I'd do:

 echo implode(',', $row);


 If it's very simple data that works, but it doesn't allow for the
 optional enclosure characters that fputcsv() uses in cases where a
 data element includes the column and/or row delimiter characters. I
 had originally written something using an array_map callback that did
 the optional enclosures as needed and then used echo implode() as you
 suggest, but found the solution I posted was shorter and faster. YMMV

 Andrew


Yeah, was considering that point as well. I'd use the echo if the
array values are getting modified anyway. Otherwise your solution is
probably simpler.

Regards
Peter

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Re: [PHP] Directory permissions question

[Peter Lind]

On 19 April 2010 17:18, Al n...@ridersite.org wrote:


 On 4/19/2010 11:11 AM, Adam Richardson wrote:

 On Mon, Apr 19, 2010 at 10:59 AM, Aln...@ridersite.org  wrote:

 I'm working on a hosted website that was hacked and found something I
 don't
 fully understand. Thought someone here may know the answer.

 The site has 4 php malicious files in directories owned by system [php
 created dirs on the site are named nobody] and permissions 755.

 Is there any way the files could have been written other than by ftp
 access
 or at the host root level? Clearly a php script couldn't.

 Thanks, Al..

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 Are there any other programming options enabled on the account (Perl, JSP,
 Ruby, etc?)  Even if the files are PHP, any of those programming options
 can
 be configured to create the files.

 Additionally, a vulnerability in one of the libraries leveraged to provide
 the hosting environment could also have provided the entry (PHP makes for
 a
 capable deliverable, but it doesn't have to provide the key for a hacking
 situation.)

 Adam


 Are Perl, JSP, Ruby, etc. able to ignore the dir ownership and write
 permissions on a Linux/Apache system?


I've seen an install of Trac hacked by a file-upload - it managed to
write a cron job, which then wrote to other files. It's not just a
question of whether your Apache server has the correct
rights/permissions, it's equally a question of: is any other part of
the system getting used against me.

Regards
Peter

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Re: [PHP] Mail Function Using PEAR Issues

[Peter Lind]

On 20 April 2010 20:17, Alice Wei aj...@alumni.iu.edu wrote:

 From: peter.e.l...@gmail.com
 Date: Mon, 19 Apr 2010 10:15:08 +0200
 Subject: Re: [PHP] Mail Function Using PEAR Issues
 To: aj...@alumni.iu.edu
 CC: php-general@lists.php.net

 Most, if not all, mail servers keep log files. You should look for the
 log files to see if the mail server has sent your mail properly or is
 experiencing problems (those may not feed back into PHP).

 Regards
 Peter

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 You know where I can find that? I use Evolution Mail, a mail server? I found
 it through Ubuntu yesterday. Here is the link:
 http://projects.gnome.org/evolution/ It asks me to put in the type of mail
 service I used, it grabbed Google, which is smtp.google.com. I still cannot
 send mail. I start to wonder what is going on.

 Alice


Evolution is a mail client, not a mail server. Apart from that, you're
using the 'mail' (PHPs mail function) as the backend mailer in your
PEAR script - try using smtp instead and pass the SMTP config data you
normally use. Have a look at
http://pear.php.net/manual/en/package.mail.mail.factory.php - the smtp
part.

Regards
Peter

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Re: [PHP] Mail Function Using PEAR Issues

[Peter Lind]

On 21 April 2010 04:25, Alice Wei aj...@alumni.iu.edu wrote:
 Well, from my experience with Ubuntu, looks like that it does not do that. 
 Unless, I am doing it wrong?

So did you try using the 'smtp' backend and passing all the connection
details rather than 'mail'?

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Re: [PHP] replying to list

[Peter Lind]

On 21 April 2010 12:38, David McGlone da...@dmcentral.net wrote:
 Maybe it's not how the list is set up, but instead how people are
 replying to the list.

One would think that in a tech world where most programmers/developers
try to minimize the workload and a good programmer is lazy is seen
as meaningful and/or true, more people would get annoyed with having
to spend 5 seconds manually copying an email address from one field to
another when there is in fact a solution to this problem (and has been
for a very long time): proper setup of the mailing list with a
'reply-to' field. (and no, I don't think the possibilities of a
misconfigured OoO/autoreply is worth the hassle to the amount of
people using this mailing list - there are mail filters for things
like that).

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Re: [PHP] replying to list (I give up)

[Peter Lind]

On 21 April 2010 14:38, Hans Åhlin ahlin.h...@kronan-net.com wrote:
 Why change the way that has been around for years and adopted by
 multiple e-mail lists?
 It feels like it's more problem to change the way for thousands of
 users just to satisfy a couple of few.

David was venting based on a discussion in another thread. I'm pretty
sure he knows about the option to reply-all - that's part of the
reason for venting (it sends multiple emails instead of just the one
needed). The optimal scenario is to: 1) be able to quickly respond to
the list, as that's the normal action you want to do and 2) not spam
people with several emails for no reason (i.e. avoid replying to the
OP AND the list).

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Re: [PHP] replying to list (I give up)

[Peter Lind]

On 21 April 2010 15:41, Dan Joseph dmjos...@gmail.com wrote:
 When you hit reply all, just take out all the other addresses and leave the
 list one in there.  The list was setup like this years ago on purpose, and
 they've stated in the past they don't want to change it..

And waste time every single time you post to the list ... why do
people become programmers/developers again? To end creating technical
solutions they can then avoid using by doing extra, pointless manual
work?

Anyway, if there's no chance of changing the minds of the people
administering the list, the discussion might as well end now.

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Re: [PHP] replying to list (I give up)

[Peter Lind]

On 21 April 2010 14:56, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
 On Wed, 2010-04-21 at 08:56 -0400, David McGlone wrote:

 On Wed, 2010-04-21 at 14:42 +0200, Daniel Egeberg wrote:
  On Wed, Apr 21, 2010 at 14:27, David McGlone da...@dmcentral.net wrote:
   I give up. trying to reply to messages on this list is tedious. I can't
   pinpoint whether it's because the list is set up to make replies go to
   the OP or the OP has his reply-to in his mail client set, or most people
   are hitting the reply-to button instead of simply reply.
 
  Then get a better email client if yours doesn't support reply to all
  or reply to group. It's hardly the mailing list's fault that your
  client doesn't support that.

 My email client does support reply to all, but it's IMHO
 inconsiderate.

 Think about people that have to pay for every Mb they download. reply
 to all causes these people to have to pay for duplicates.

 Now if somebody on this list was paying for their downloads, then you
 and I am costing them money by using reply to all and now there are 2
 duplicate messages for them the download.

 How would you feel if this was you?

 --
 Blessings,
 David M.




 Did you read the link that David Robley sent on the original thread you
 made?
 http://www.unicom.com/pw/reply-to-harmful.html

 What you're proposing would cause a lot of problems for the sake of a
 few people. And I hardly think that a few emails are going to cause a
 bandwidth issue for anybody. If bandwidth was such an issue, they'd be
 using an email client that only downloaded the email headers first, and
 from there you could easily discern the duplicate messages.

Except it wouldn't cause a lot of problems, now would it? As you've
heard from quite a few others, many mailing lists work using the
'reply-to' ... and have happy users. Most of the points in the doc you
posted a link to are viewpoints from someone that's used to one thing
and hates the idea of things changing - whether or not it makes life
easier (the It makes things break for instance ... calling replying
to the list instead of the OP a break is rather farfetched unless
you've stared at something you hate for so long you've become blinded
byt it. Then there's the Freedom of choice: well, where's my freedom
of choice? I can't use 'reply' as I want to, so it's effectively
reduced *my* freedom).

Quick guess is by now, the majority of people clicking reply *mean*
to reply to the list but in effect reply to the OP. Using reply-to
would help these people. Anyone using reply-all would see no
difference. So when you're advocating that many subscribers should
ditch their email client and install Evolution instead of having *one*
email list have it's settings changed a bit ... I start to wonder if
you've considered things from both sides.

Regards
Peter

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Re: [PHP] Re: replying to list (I give up)

[Peter Lind]

On 21 April 2010 20:09, Michelle Konzack linux4miche...@tamay-dogan.net wrote:
 Hello Peter Lind,

Hi Michelle

 Am 2010-04-21 15:47:54, hacktest Du folgendes herunter:
 And waste time every single time you post to the list ... why do
 people become programmers/developers again? To end creating technical
 solutions they can then avoid using by doing extra, pointless manual
 work?

 Hmmm, being a Programmer/Developer since 1982 and have ever used  decent
 tools to accomplish a task...  including the right  MUA  which  simplify
 the Programmers/Developers daily mailing tasks.

Making it the problem of the MUA is a hack, not a solution. If you
really want to go down the I have experience route I'd expect you to
choose the fix the problem at the root-solution not the lets hack
it by leaving the problem as is and requiring everyone to choose a
proper tool-hack.

 Anyway, if there's no chance of changing the minds of the people
 administering the list, the discussion might as well end now.

 Why should Programmers/Developers bother with non-reliable  MUAs  which
 do not support Programmers/Developers daily mailing tasks?

 If YOU are a Programmer/Developer why do you bother with a  non-suitable
 MUA?

Please don't make assumptions about me and my tools - you have no
basis for them. Apart from that, I see no reason to call MUAs
'suitable' based on whether or not they fix a problem that should be
fixed elsewhere.
 If I'm not mistaken, we're faced with a quite simple cost/benefit
scenario: how many people want to reply just to the list when
responding and how many people want to reply just to the OP when
responding. If the first number is higher than the second, then we're
imposing extra work on people (either by asking them to manually fix
email addresses or by bullying them into changing email clients) if we
stick to the solution that fit the second group.

But it's still a moot point, as the admins of the list won't be
changing settings.

Regards
Peter

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Re: [PHP] Re: replying to list (I give up)[SOLVED TO A DEGREE]

[Peter Lind]

On 22 April 2010 12:14, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
 I believe Dan Brown mentioned a very good reason why this is not as
 simple an issue as just changing the reply-to. Not everyone who posts to
 the list subscribes to the list, so being copied into the emails is good
 for them. Suddenly changing the way things work could actually be
 detrimental to the list. Imagine how many people joined up *after*
 posting a question and receiving a good answer.

That wouldn't change - they only get copied in when you choose
'reply-all' and that would work the same whether or not a 'reply-to'
is used.

Regards
Peter

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Re: [PHP] Re: replying to list (I give up)[SOLVED TO A DEGREE]

[Peter Lind]

On 22 April 2010 17:05, Ashley Sheridan a...@ashleysheridan.co.uk wrote:

 On Thu, 2010-04-22 at 17:06 +0200, Peter Lind wrote:

 On 22 April 2010 12:14, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
  I believe Dan Brown mentioned a very good reason why this is not as
  simple an issue as just changing the reply-to. Not everyone who posts to
  the list subscribes to the list, so being copied into the emails is good
  for them. Suddenly changing the way things work could actually be
  detrimental to the list. Imagine how many people joined up *after*
  posting a question and receiving a good answer.

 That wouldn't change - they only get copied in when you choose
 'reply-all' and that would work the same whether or not a 'reply-to'
 is used.

 Regards
 Peter


 It would change for the first reply. You say you just want to hit reply to 
 reply to the list. Now if anyone hits reply, because the reply-to' header has 
 been changed, the reply goes to the list and not the op. They're not 
 subscribed and so they miss out.

You seem to forget the amount of people stating remove the other
addresses from the reply-all response. Also, if you don't want to
subscribe to a mailing list, the onus is really on you to make sure
you get the response if any comes.

 The way things stand, hitting reply instead of reply to all sends the reply 
 back to the op only. It happens on this list often and doesn't cause many 
 issues as the op or replyer notices and sends/copies the list back in again.

It's rather annoying and easily avoided. The question is whether this
problem is bigger than people not subscribed to the list not getting a
response, because people use reply instead of reply all.

 Changing the reply-to header would mean that if someone just hit reply, the 
 unsubscribed op wouldn't get the reply at all, and any further replies to 
 that thread would all be to the list only and the unsubscribed op would never 
 know.

Emailing a mailing list and expecting an automated response is ... I
don't want to be negative or arrogant, but I think there's a general
and rather problematic lack of experience there. It's a bit like
walking past a group of people, yelling a question at them, then
expecting one of them to run back to you with the answer after you've
passed. Would you normally expect that kind of behaviour?
 Apart from that, if in the current scenario you just hit 'reply' and
send the email off to the OP, the list doesn't get the benefit - and
the OP is not going to change that fact, as they're not subscribed to
the list and won't notice anyway. Which is worse, one person having to
check the answer by looking at the mailing list archive or the rest of
the list not benefiting at all from the answer?

Regards
Peter

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Re: [PHP] Structured PHP studying

[Peter Lind]

On 23 April 2010 13:15, David McGlone da...@dmcentral.net wrote:
 Is there a good strategy to studying PHP?

 For instance, is there a way to break everything down into small managable
 topics?

The Zend study guide might be a place to start - not for free thought,
so there may be better options (it's also directed at getting Zend
certified, so it's covering the stuff you need to know for that, not
connected things).

Regards
Peter

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Re: [PHP] creating a PHP wrapper script?

[Peter Lind]

php.net/curl should be able to do what you want.

file_get_contents with a proper stream context should also work (have
a look at functions like http://dk.php.net/manual/en/context.http.php
)

Regards
Peter

On 23 April 2010 17:18, Robert P. J. Day rpj...@crashcourse.ca wrote:

  i'm sure this isn't hard to do, but i'm having end-of-week brain
 cramps.  just now, i installed a PHP package that lets me download
 thumbnails of image files stored on a server -- the URL to generate
 and download a thumbnail is, say:

 http://server/d1/d2/thumbnail.php?fileID=whateverarg1=val1arg2=val2

 and so on.  unsurprisingly, the thumbnail generation program accepts
 numerous arguments and is incredibly sophisticated, and is stored in a
 subdirectory under /var/www/html and ... well, you get the idea,
 calling it directly involves creating quite the URL.

  instead, i'd like to stuff a wrapper script at the top of the
 document root which hides all that complexity, so i can just browse
 to:

 http://server/thumb.php?fileID=whatever

 and have that top-level thumb.php script make the appropriate
 invocation to the real thumbnail.php script with all of those
 (default) arguments and values.

  so, what would thumb.php look like?  i obviously need to simulate a
 POST call, retrieve the output and pass it back unchanged.  thoughts?
 surely this is something that people want to do on a regular basis,
 no?

 rday
 --

 
 Robert P. J. Day                               Waterloo, Ontario, CANADA

            Linux Consulting, Training and Kernel Pedantry.

 Web page:                                          http://crashcourse.ca
 Twitter:                                       http://twitter.com/rpjday
 

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Re: [PHP] public readonly variables

[Peter Lind]

On 23 April 2010 18:10, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
 I think for now I'll just resort to leaving it as a public variable.
 I'll leave the specific set function for it in and just hope that is
 used instead! As it's only me who'll be using it for the time being, I
 can always yell at myself later if I forget!

You're using a setter but a public variable? That's about the worst
compromise, isn't it? Either go down the road of the public variable
or the setter/getter (and in your case I would definitely recommend
the latter). Also, __get/__set are fine, as long as you don't use them
for everything (i.e. 5 magic calls per request will do very, very
little to your app, whereas 1000 per request will have some
significance on a site with lots of users).

Regards
Peter

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Re: [PHP] public readonly variables

[Peter Lind]

On 23 April 2010 18:26, Ashley Sheridan a...@ashleysheridan.co.uk wrote:

 On Fri, 2010-04-23 at 12:25 -0400, Adam Richardson wrote:

 On Fri, Apr 23, 2010 at 12:21 PM, Peter Lind peter.e.l...@gmail.com wrote:

  On 23 April 2010 18:10, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
   I think for now I'll just resort to leaving it as a public variable.
   I'll leave the specific set function for it in and just hope that is
   used instead! As it's only me who'll be using it for the time being, I
   can always yell at myself later if I forget!
 
  You're using a setter but a public variable? That's about the worst
  compromise, isn't it? Either go down the road of the public variable
  or the setter/getter (and in your case I would definitely recommend
  the latter). Also, __get/__set are fine, as long as you don't use them
  for everything (i.e. 5 magic calls per request will do very, very
  little to your app, whereas 1000 per request will have some
  significance on a site with lots of users).
 
  Regards
  Peter
 
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 I agree with Peter, that solutions asks for trouble (something I often do,
 but avoid publicly advocating ;)

 The solution I suggested still maintains all of the documentation
 capabilities (at least in my NetBeans), but enforces protection.  It's not
 perfect, but it does work relatively well.

 Adam


 I am probably looking at a lot of getters in the code though, so the overhead 
 I'd rather avoid. The setter is to go some way towards keeping the values 
 sane, which I realise goes against the whole public variable thing, which is 
 the reason for my original question.

 Another reason for the setter is that it actually modifies a couple of 
 variables, so there's no good way of getting rid of that, as it would then 
 mean setting two properties of the object manually, which would actually lead 
 to more issues down the line if not set correctly.


If you're just creating the project now, I'd autogenerate the classes,
to avoid the manual work. Otherwise, I'd give it some long thought
then grit my teeth and dig in.

Regards
Peter


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Re: [PHP] PHP not being read?

[Peter Lind]

On 25 April 2010 05:00, Gary g...@paulgdesigns.com wrote:
 Karl

 On the laptop, the original machine, it has Vista, Firefox 3.6.3. Previewing
 on testing server Apache (XAMPP )on the computer, not network

 On the tower, it is running XP Pro, Firefox 3.6.3. Previewing on local
 testing server.



Check that the php module is loaded by Apache on the 'bad' machine and
that the proper handler is set. Should be a line like:
AddHandler application/x-httpd-php .php .phtml .php3

in the php5.conf file (look in mods-enabled, if you're running Apache2
- I'm hoping the setup is the same under Vista as *nix)

Regards
Peter

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Re: [PHP] Weird problem with is_file()

[Peter Lind]

On 25 April 2010 22:14, Michelle Konzack linux4miche...@tamay-dogan.net wrote:
 Hi,

 I have a code sniplet which does not work and I do not know why:

 8--
  $isfile=shell_exec(ls /tmp/tdphp-vserver/SESSION_ . 
 $_SERVER['REMOTE_ADDR'] . _ . $_COOKIE['VSERVER_AUTHUSER'] . _* |head 
 -n1);

  if (is_file($isfile)) {
 snip
 8--

 nothing special, and the file  is there, but the stuff with

    is_file($isfile)

 is not working...  If I enter the file in place of $isfile, then  it  is
 working.   Quoting of $isfile does not work too.

 What have a overseen?

var_dump($isfile);

Don't make assumptions of what the value is, just check it.

Regards
Peter


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Re: [PHP] getting content exceprts from the database

[Peter Lind]

On 26 April 2010 12:52, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
 I've been thinking about this problem for a little while, and the thing
 is, I can think of ways of doing it, but they're not very nice, and I
 don't think they're going to be fast.

 Basically, I have a load of HTML formatted content in a database that
 get displayed onto the site. It's part of a rudimentary CMS.

 Currently, the titles for each article are displayed on a page, and each
 title links to the full article. However, that leaves me with a page
 which is essentially a list of links, and that's not ideal for SEO. What
 I wanted to do to enhance the page is to have a short excerpt of x
 number of words/characters beneath each article title. The idea being
 that search engines will find the page as more than a link farm, and
 visitors won't have to just rely on the title alone for the content.

 Here's the rub though. As the content is in HTML form, I can't just grab
 the first 100 characters and display them as that could leave an open
 tag  without a closing one, potentially breaking the page. I could use
 strip_tags on the 100-character excerpt, but what if the excerpt itself
 broke a tag in half (i.e. acronym title=something could become
 acron )

 The only solutions I can see are:


      * retrieve the entire article, perform a strip_tags and then take
        the excerpt
      * use a regex inside of mysql to pull out only the text


 The thing is, neither of these seems particularly pretty, and I am sure
 there's a better way, but it's too early in the week for my brain to be
 fully functional I think!

 Does anyone have any ideas about what I could do, or do you think I'm
 seeing problems where there are none?

Use htmltidy or htmlpurifier to clean up things. I.e. grab the amount
of content you want, then use one of the tools to repair and clean the
html.

Regards
Peter

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Re: [PHP] getting content exceprts from the database

[Peter Lind]

On 26 April 2010 13:23, Ashley Sheridan a...@ashleysheridan.co.uk wrote:

 On Mon, 2010-04-26 at 13:20 +0200, Peter Lind wrote:

 On 26 April 2010 12:52, Ashley Sheridan a...@ashleysheridan.co.uk wrote:
  I've been thinking about this problem for a little while, and the thing
  is, I can think of ways of doing it, but they're not very nice, and I
  don't think they're going to be fast.
 
  Basically, I have a load of HTML formatted content in a database that
  get displayed onto the site. It's part of a rudimentary CMS.
 
  Currently, the titles for each article are displayed on a page, and each
  title links to the full article. However, that leaves me with a page
  which is essentially a list of links, and that's not ideal for SEO. What
  I wanted to do to enhance the page is to have a short excerpt of x
  number of words/characters beneath each article title. The idea being
  that search engines will find the page as more than a link farm, and
  visitors won't have to just rely on the title alone for the content.
 
  Here's the rub though. As the content is in HTML form, I can't just grab
  the first 100 characters and display them as that could leave an open
  tag  without a closing one, potentially breaking the page. I could use
  strip_tags on the 100-character excerpt, but what if the excerpt itself
  broke a tag in half (i.e. acronym title=something could become
  acron )
 
  The only solutions I can see are:
 
 
       * retrieve the entire article, perform a strip_tags and then take
         the excerpt
       * use a regex inside of mysql to pull out only the text
 
 
  The thing is, neither of these seems particularly pretty, and I am sure
  there's a better way, but it's too early in the week for my brain to be
  fully functional I think!
 
  Does anyone have any ideas about what I could do, or do you think I'm
  seeing problems where there are none?

 Use htmltidy or htmlpurifier to clean up things. I.e. grab the amount
 of content you want, then use one of the tools to repair and clean the
 html.

 Regards
 Peter

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 Would that work on content that stopped mid-tag? Assuming the original copy 
 is:

 pThis is some sentence, with an abbr title=Abbreviationabbr/abbr in 
 the middle of it./p

 If I was asking for only the first 50 characters, I'd get this:

 pThis is some sentence, with an abbr title=Abb

 Would either htmltidy or htmlpurifier be able to handle that? I don't mind 
 whether it tries to repair the tag or remove it completely, as long as it 
 does something to it.

 Thanks,
 Ash
 http://www.ashleysheridan.co.uk


HTMLTidy should definitely do something to it, pretty sure it's able
to clean that up so you get working html. Same for HTMLPurifier (the
latter is not as much what you're looking for, it protects against
injections more than validating html - so disregard that I mentioned
that one for now :) ).

Regards
Peter


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Re: [PHP] Error handling strategies (db related)

[Peter Lind]

On 27 April 2010 10:42, Gary . php-gene...@garydjones.name wrote:
 How do you guys handle errors during, say, db insertions.

 Let's say you have an ongoing transaction which fails on the n-th
 insert. Ok, you roll back the transaction, no problem. How do you then
 inform the user? Just using the text from pg_result_error  or
 something?


If it's a normal user, give them some info about what went wrong but
not the specific error returned. If it's an admin with dev knowledge
(i.e. you) then consider handing out the returned error as well.

Rule of thumb: aim to inform the user without confusing. There's
nothing worse than This didn't work, sorry - why didn't it work??
Was it my fault? Can I get it to work somehow?

Regards
Peter


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Re: [PHP] Weird while issue

[Peter Lind]

On 27 April 2010 14:36, Juan Rodriguez Monti j...@rodriguezmonti.com.ar wrote:
 Hi guys,
 I have some issues with while.

 I have an HTML Form, that uses GET to process its contents. Then
 there's a PHP Script that receives the data, and evaluates the fields.

 So, in some instance of the code, I do something like :

 if (empty($a) AND empty($b)) {

 echo something;
 echo something;
 echo something;

 while ($row = sqlite_fetch_array($results,SQLITE_BOTH)) {

 And here I print some echo's to print an HTML's Table with the results
 of the while.
 echo Something more;
 echo etc;

            }
 } elseif (empty($c) AND empty($d)) {

 Here there is another elseif similar to the first one explained above.

 }

 I have four or five elseif's that analizes the fields of the HTML's
 Form and then the PHP's Code do things depending of the combinations
 of fields submited and so on.

 The problem is that if I want to add an echo saying Come Back to
 Index to index.html, I'm not able to show it after the while's
 iteration.

 The PHP code prints the table with its results taken from SQlite
 perfectly. Also it evaluates all the conditions flawessly. However, If
 I add a link to come back with the text Go to Index after the while
 and before the } close to the next elseif, PHP prints it in the wrong
 ubication.

 I got something like:

 TITLE

 *** Go to Index ***

 While results. This is the table containing all the results of the
 SQlite's Query.

 If I move the echo to other part of the block, I receive so many
 echo's as iterations the while do ( this is logical ). However I don't
 understand why the echo is printed above the while even when I put it
 after the while and out of the while's block.


Check your html for broken html table code.

Regards
Peter

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Re: [PHP] Error handling strategies (db related)

[Peter Lind]

On 27 April 2010 15:36, Paul M Foster pa...@quillandmouse.com wrote:
 On Tue, Apr 27, 2010 at 10:42:03AM +0200, Gary . wrote:

 How do you guys handle errors during, say, db insertions.

 Let's say you have an ongoing transaction which fails on the n-th
 insert. Ok, you roll back the transaction, no problem. How do you then
 inform the user? Just using the text from pg_result_error  or
 something?

 I use trigger_error() and stop execution at that point. I give the user
 an error that basically says, Talk to the admin/programmer. And I send
 the programmer a message containing a trace of what occurred. The theory
 is that, all things being equal, such an error should never occur and
 there is no user recovery. If the user properly entered the data they
 were asked for, then the transaction should go through without incident.
 If something prevents the transaction from going through, it's likely a
 coding problem and up to the programmer or admin to repair.


Fair reasoning, but it amounts to throwing a bucket of cold water in
the face of your user. If I was looking at an error like that, I'd get
mighty annoyed with the software, and after a while would definitely
look for alternatives. Whether or not there's a coding problem, you
have to look at the situation from the point of the user: a complete
failure with no information is like a BSOD/TSOD ... and we all know
the effect they have on a user.

Regards
Peter

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Re: [PHP] Error handling strategies (db related)

[Peter Lind]

On 27 April 2010 16:07, Paul M Foster pa...@quillandmouse.com wrote:
 On Tue, Apr 27, 2010 at 03:41:04PM +0200, Peter Lind wrote:

 On 27 April 2010 15:36, Paul M Foster pa...@quillandmouse.com wrote:
  On Tue, Apr 27, 2010 at 10:42:03AM +0200, Gary . wrote:
 
  How do you guys handle errors during, say, db insertions.
 
  Let's say you have an ongoing transaction which fails on the n-th
  insert. Ok, you roll back the transaction, no problem. How do you then
  inform the user? Just using the text from pg_result_error  or
  something?
 
  I use trigger_error() and stop execution at that point. I give the user
  an error that basically says, Talk to the admin/programmer. And I send
  the programmer a message containing a trace of what occurred. The theory
  is that, all things being equal, such an error should never occur and
  there is no user recovery. If the user properly entered the data they
  were asked for, then the transaction should go through without incident.
  If something prevents the transaction from going through, it's likely a
  coding problem and up to the programmer or admin to repair.
 

 Fair reasoning, but it amounts to throwing a bucket of cold water in
 the face of your user. If I was looking at an error like that, I'd get
 mighty annoyed with the software, and after a while would definitely
 look for alternatives. Whether or not there's a coding problem, you
 have to look at the situation from the point of the user: a complete
 failure with no information is like a BSOD/TSOD ... and we all know
 the effect they have on a user.

 I assume (1) that I've vetted the user data and given them the option to
 repair it if it's faulty; (2) beyond the beta phase, this type of error
 should not happen. If it does, it's a coding problem. Given that the
 user can do *nothing* about this and it *is* a coding problem, what
 would you tell the user?

Sorry, but there was a problem inserting the data into the database.
The developers have been notified about this error and will hopefully
have it fixed very soon. We apologize for the inconvenience.

At the very least, something along those lines.

 If I was the user, I'd be cranky as well. But if I were a smart user,
 I'd realize that the programmer made a mistake and put the
 responsibility firmly on him. And expect him to fix it pronto.

If only the world consisted of smart users ... I think, however, that
we're generally closer to the opposite. And no, I don't hate users -
I've just seen too many people do things that were very far removed
from smart.

Regards
Peter

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Re: [PHP] Error handling strategies (db related)

[Peter Lind]

On 27 April 2010 16:24, Paul M Foster pa...@quillandmouse.com wrote:
 On Tue, Apr 27, 2010 at 04:13:20PM +0200, Peter Lind wrote:

 On 27 April 2010 16:07, Paul M Foster pa...@quillandmouse.com wrote:
  On Tue, Apr 27, 2010 at 03:41:04PM +0200, Peter Lind wrote:
 
  On 27 April 2010 15:36, Paul M Foster pa...@quillandmouse.com wrote:
   On Tue, Apr 27, 2010 at 10:42:03AM +0200, Gary . wrote:
  
   How do you guys handle errors during, say, db insertions.
  
   Let's say you have an ongoing transaction which fails on the n-th
   insert. Ok, you roll back the transaction, no problem. How do you then
   inform the user? Just using the text from pg_result_error  or
   something?
  
   I use trigger_error() and stop execution at that point. I give the user
   an error that basically says, Talk to the admin/programmer. And I send
   the programmer a message containing a trace of what occurred. The theory
   is that, all things being equal, such an error should never occur and
   there is no user recovery. If the user properly entered the data they
   were asked for, then the transaction should go through without incident.
   If something prevents the transaction from going through, it's likely a
   coding problem and up to the programmer or admin to repair.
  
 
  Fair reasoning, but it amounts to throwing a bucket of cold water in
  the face of your user. If I was looking at an error like that, I'd get
  mighty annoyed with the software, and after a while would definitely
  look for alternatives. Whether or not there's a coding problem, you
  have to look at the situation from the point of the user: a complete
  failure with no information is like a BSOD/TSOD ... and we all know
  the effect they have on a user.
 
  I assume (1) that I've vetted the user data and given them the option to
  repair it if it's faulty; (2) beyond the beta phase, this type of error
  should not happen. If it does, it's a coding problem. Given that the
  user can do *nothing* about this and it *is* a coding problem, what
  would you tell the user?

 Sorry, but there was a problem inserting the data into the database.
 The developers have been notified about this error and will hopefully
 have it fixed very soon. We apologize for the inconvenience.

 At the very least, something along those lines.

 Well of course. No reason to slap the user in the face. I agree. But in
 the end, this is about the same as saying, Talk to the programmer,
 just a nicer way of saying it.

Of course, it's just a question of degree. If the user can't correct
the error, there's only one person that can: the programmer. Question
is what you tell the user in that situation.


  If I was the user, I'd be cranky as well. But if I were a smart user,
  I'd realize that the programmer made a mistake and put the
  responsibility firmly on him. And expect him to fix it pronto.

 If only the world consisted of smart users ... I think, however, that
 we're generally closer to the opposite. And no, I don't hate users -
 I've just seen too many people do things that were very far removed
 from smart.

 Unfortunately, true. Sometimes I think computer users should be required
 to take a course in using a computer before being allowed behind the
 keyboard.


While I love to rant at stupid users, the truth is probably that
programmers are the ones who should take courses in how users think.
In the end, if I fail to understand my users, it doesn't matter how
great my program is: they'll still fail to use it. Anyway, those are
just truisms :) Nothing new under the sun.

Regards
Peter

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Re: [PHP] Error handling strategies (db related)

[Peter Lind]

On 27 April 2010 18:21, tedd tedd.sperl...@gmail.com wrote:
 At 4:31 PM +0200 4/27/10, Peter Lind wrote:

 While I love to rant at stupid users, the truth is probably that
 programmers are the ones who should take courses in how users think.
 In the end, if I fail to understand my users, it doesn't matter how
 great my program is: they'll still fail to use it. Anyway, those are
 just truisms :) Nothing new under the sun.

 Regards
 Peter


 Peter:

 You're right on. I just read three books on the subject:

 1. Don't Make Me Think by Steve Krug.

 This is a somewhat dated book, but his perspective is right-on and is the
 basis for understanding usability.

+1. Great book that is.

 2. Neuro Web Design bu Susan M. Weinschenk.

 The theory behind why people do what they do is explained in great detail in
 this book. It makes a great book to read regardless of if you're trying to
 sell something on the net or elsewhere. However, this book is focused on
 selling things to people via the net.

Will have to look at that, sounds interesting.

 3. Rocket Surgery Made Easy by Steve Krug.

 This is the second book in Steve's How to do it yourself in usability
 studies. It will give you exactly what you need to do to set up inexpensive
 usability studies. Usability studies are important in software and web
 design.

 If developers (and clients) read those books, we would have less problems
 dealing with users.


Haven't read his second, guess I should :) Thanks for the recommendations.

Regards
Peter


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Re: [PHP] What is wrong with this code?

[Peter Lind]

On 28 April 2010 08:39, Gary . php-gene...@garydjones.name wrote:
 class Pg_Error
 {
    private static $errors =
        array(INTEGRITY_CONST_UNIQUE = 'uniqueness constraint violated');
 ...
    public static function getMessage($ec)
    {
        $text = '';
        if (array_key_exists($ec, Pg_Error::$errors))
        {
            $text = Pg_Error::$errors[$ec];
        }

        return $text;
    }
 ...
 }

 ?

 Calling it, the array_key_exists call always returns false:
 $this-assertEquals('uniqueness constraint violated',
 Pg_Error::getMessage(Pg_Error::INTEGRITY_CONST_UNIQUE));
 and I can't see what I've done wrong :(


In your code snippet, you do not declare
Pg_Error::INTEGRITY_CONST_UNIQUE - and equally to the point, in the
class you only use INTEGRITY_CONST_UNIQUE in the array, not
Pg_Error::INTEGRITY_CONST_UNIQUE

Regards
Peter

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Re: [PHP] What is wrong with this code?

[Peter Lind]

On 28 April 2010 10:57, Gary . php-gene...@garydjones.name wrote:
 On 4/28/10, Jochem Maas wrote:
      class Pg_Error
      {
        const INTEGRITY_CONST_UNIQUE = '23505';

 this is a class constant

          private static $errors =
              array(INTEGRITY_CONST_UNIQUE = 'uniqueness constraint
     violated');
 [...]
 unfortunately you cannot use a classes
 own
 constants in the definition of the $errors var

 Huh? IWFM. Is it defined in the language that it does not work, or
 might not work depending on the runtime environment? IMO it should
 work (given the declaration order) but I know statics do have a
 tendency (certainly in other laguages) to be somewhat special.


Shouldn't be any problems using a classes constants in the definition
of an array in the same class. However, to avoid possible extra work
down the line, I wouldn't use Pg_Error::YOUR_CONSTANT inside the
class, I'd use self::YOUR_CONSTANT

Regards
Peter

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Re: [PHP] Project TIME calculated, in PHP

[Peter Lind]

On 1 May 2010 22:02, Richard Quadling rquadl...@googlemail.com wrote:
 On 1 May 2010 18:48, justino garcia jgarciaitl...@gmail.com wrote:
 tImeArrived = CDate(InputBox(Enter START time:, Start time, 9:00 AM))
 TimeLeft = CDate(InputBox(Enter END time:, End time, 1:24 PM))
 Minutes = DateDiff(n, TimeArrived, TimeLeft)
 Hours = Int(Minutes / 60)
 Minutes = Minutes - (Hours * 60)
 TotalTime = Format(Hours, 0)  :  Format(Minutes, 00)

 I did something like this in VBA, but I want to create something for PHP.

 How can  extract an am or pm from the input string, convert to 24 hours for
 calculations, then convert back to 12 hour am/pm format in PHP?


Consider the DateTime class, might suit your needs.
http://dk2.php.net/manual/en/class.datetime.php

Regards
Peter

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