date:20090317

Waynn Lue wrote:

 Here's pseudo code for what I'm trying to do:
 
 foreach ($things as $thing) {
 info = getInfo($thing); // uses a db connection
 makeApiCall(info);
 }
 
 makeApiCall(info) {
   $pid = pcntl_fork();
   if ($pid == -1) {
 die(could not fork);
   } else if ($pid) {
 // parent, return the child pid
 echo child pid $pid\n;
 return;
   } else {
 // do some api calls
exit;
   }
 }
 
 But after I spawn off the process, getInfo($thing) errors out sometime
 later on with an invalid query error, because I think the db
 connection is gone.  I thought adding exit in the child process
 would be enough, but that doesn't seem to work, I still get the same
 error.  Why would the child process affect the query in the parent
 process, especially if I exit in the child process?

First things first - I would add a pcntl_wait like this:

foreach ($things as $thing) {
info = getInfo($thing); // uses a db connection
makeApiCall(info);
  switch( $p=pcntl_wait( $stat, WNOHANG ) )
  {
case -1:  echo some sort of error in pcntl_wait()\n; break;
case 0: break;
default:
   echo child $p finished\n;
  }
}


Second, it sounds like you're expecting to reuse your database
connection from getInfo() in the child you're forking in makeAPIcall()? 
I don't think that really works - I think you need a new connection per
child.


/Per


-- 
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Re: [PHP] Re: strcmp() versus ==

2009-03-17 Thread Robert Cummings

On Tue, 2009-03-17 at 08:09 +0200, Alpár Török wrote:
 2009/3/17 Shawn McKenzie nos...@mckenzies.net:
  Shawn McKenzie wrote:
  Paul M Foster wrote:
  I had never completely read over the rules with regard to comparisons in
  PHP, and was recently alarmed to find that $str1 == $str2 might not
  compare the way I thought they would. Is it common practice among PHP
  coders to use strcmp() instead of == in making string comparisons? Or am
  I missing/misreading something?
 
  Paul
 
 
  I would use $str1 === $str2 if you want to make sure they are both
  strings and both the same value.
 
  Since PHP is loosely typed, 0 == 0 is true however 0 === 0 is false.
 
 
  If you want to force a string comparison you can also use:
 
  (string)$str1 == (string)$str2
 
  --
  Thanks!
  -Shawn
  http://www.spidean.com
 
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 AFAIK strcmp and strncmp are faster. At least for the second i
 remember seeing benchmarks that proved that.

Then you must have seen a bad benchmark. strncmp() has specific purposes
and so does strcmp() where you would choose it instead of == or ===. But
with respect to speed, if all you want to know is whether two strings
are the same then == or === will be faster since they are operators and
do not have the same overhead as a function call.

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


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Re: [PHP] Fork and zombies


  Here's pseudo code for what I'm trying to do:
 
  foreach ($things as $thing) {
  info = getInfo($thing); // uses a db connection
  makeApiCall(info);
  }
 
  makeApiCall(info) {
$pid = pcntl_fork();
if ($pid == -1) {
  die(could not fork);
} else if ($pid) {
  // parent, return the child pid
  echo child pid $pid\n;
  return;
} else {
  // do some api calls
 exit;
}
  }
 
  But after I spawn off the process, getInfo($thing) errors out sometime
  later on with an invalid query error, because I think the db
  connection is gone.  I thought adding exit in the child process
  would be enough, but that doesn't seem to work, I still get the same
  error.  Why would the child process affect the query in the parent
  process, especially if I exit in the child process?

 First things first - I would add a pcntl_wait like this:

 foreach ($things as $thing) {
 info = getInfo($thing); // uses a db connection
 makeApiCall(info);
   switch( $p=pcntl_wait( $stat, WNOHANG ) )
  {
case -1:  echo some sort of error in pcntl_wait()\n; break;
case 0: break;
default:
   echo child $p finished\n;
  }
 }


I actually tried this in the meantime:

  $pid = pcntl_fork();
  if ($pid == -1) {
die(could not fork);
  } else if ($pid) {
// parent, return the child pid
echo child pid $pid waiting\n;
pcntl_waitpid($pid, $status);
if (pcntl_wifexited($status)) {
  echo finished [$status] waiting\n;
  return;
} else {
  echo ERROR\n;
}


But it still has the same problem, and I'm also trying to avoid pcntl_wait
or pcntl_waitpid at all because I still want to do it asynchronously.  I
even tried rewriting it do return $pid in the parent thread, and then
aggregate them at the calling function level, and then loop through them all
with pcntl_waitpid, but that didn't work either.




 Second, it sounds like you're expecting to reuse your database
 connection from getInfo() in the child you're forking in makeAPIcall()?
 I don't think that really works - I think you need a new connection per
 child.


Oh, in this case, I don't do anything with the database at all in the child
thread.  I was worried there would be some errors there so I actually
commented out all db accesses in the child thread, but it still somehow
closes the parent's db connection (or at least causes the query not to work,
somehow).

Re: [PHP] Fork and zombies

Waynn Lue wrote:

 I actually tried this in the meantime:
 
   $pid = pcntl_fork();
   if ($pid == -1) {
 die(could not fork);
   } else if ($pid) {
 // parent, return the child pid
 echo child pid $pid waiting\n;
 pcntl_waitpid($pid, $status);
 if (pcntl_wifexited($status)) {
   echo finished [$status] waiting\n;
   return;
 } else {
   echo ERROR\n;
 }
 

I think your waitpid() is in the wrong place, and at least you need use
WNOHANG - unless you specifically want to wait for each child to finish
before starting another one.

 But it still has the same problem, and I'm also trying to avoid
 pcntl_wait or pcntl_waitpid at all because I still want to do it
 asynchronously.  

pcntl_wait(WNOHANG) will make everything work asynchronously.


/Per

-- 
Per Jessen, Zürich (5.8°C)


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[PHP] Re: strcmp() versus ==

2009-03-17 Thread Clancy

On Mon, 16 Mar 2009 17:06:35 -0500, nos...@mckenzies.net (Shawn McKenzie) wrote:

Shawn McKenzie wrote:
 Paul M Foster wrote:
 I had never completely read over the rules with regard to comparisons in
 PHP, and was recently alarmed to find that $str1 == $str2 might not
 compare the way I thought they would. Is it common practice among PHP
 coders to use strcmp() instead of == in making string comparisons? Or am
 I missing/misreading something?

 Paul

 
 I would use $str1 === $str2 if you want to make sure they are both
 strings and both the same value.
 
 Since PHP is loosely typed, 0 == 0 is true however 0 === 0 is false.
 

If you want to force a string comparison you can also use:

(string)$str1 == (string)$str2

Recently there was some discussion about inexplicable results from sorting 
alphanumeric
strings.  Inspired by your suggestion I filled in an array with random 4 
character
alphanumeric strings, and then wrote a simple bubblesort.  I made two copies of 
the array,
and sorted one using a simple comparison, and the other using the above 
comparison.  The
initial values of the array were :

$aa = array 
('ASDF','01A3','0A13',1,'00A3','','001A','','7205','00Z0'); 

(There are no letter 'O's in this),

And the results I got were:

Tb2_38: Original   Raw comp   String Comp
ASDF   
01A300A3   001A
0A1301A3   00A3
1   0A13   00Z0
00A3ASDF   01A3
  0A13
001A1 1
001A   7205
720500Z0   ASDF
00Z07205   

Apart from the out of place '1', apparently treated as '1000', which I threw in 
out of
curiosity, the string comparison gave the expected results, but I cannot see 
the logic of
the raw comparison.  Can anybody explain these results?

Clancy

If anyone is suspicious the actual code I used was:


$aa = array 
('ASDF','01A3','0A13',1,'00A3','','001A','','7205','00Z0'); 

$k = count ($aa); $bb = $aa; $cc = $aa;
while ($k  1)
{
$i = 0; $j = 1; while ($j  $k)
{
if ($cc[$i]  $cc[$j])
{
$t = $cc[$i]; $cc[$i] = $cc[$j]; $cc[$j] = $t;
}
++$i; ++$j;
}
--$k;
}

$k = count ($aa);
while ($k  1)
{
$i = 0; $j = 1; while ($j  $k)
{
if ((string)$bb[$i]  (string)$bb[$j])
{
$t = $bb[$i]; $bb[$i] = $bb[$j]; $bb[$j] = $t;
}
++$i; ++$j;
}
--$k;
}

echo 'pTb2_38: Originalnbsp;nbsp;nbsp;Raw comp nbsp;nbsp;String 
Comp/p'; 
$i = 0; $k = count ($aa);
while ($i  $k)
{
echo 'pnbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; 
nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; '.$aa[$i].
'nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;'.$cc[$i].
 
'nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;'.$bb[$i].'/p';
++$i;
}

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Re: [PHP] Fork and zombies

Waynn Lue wrote:

 Ah, I was changing it to waiting for each child to finish in order to
 see if I could narrow down my db problem, because I figure this should
 be more or
 less equivalent to running it synchronously.  Even like this, though,
 it still causes the db problem.

I think the database problem is caused by your child inheriting the
connection, and then closing it - whilst the parent is still using it. 
Your parent needs to open a new connection.


/Per

-- 
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Re: [PHP] Re: Fork and zombies

Waynn Lue wrote:

 (Apologies for topposting, I'm on my blackberry). Hm, so you think
 exiting from the child thread causes the db resource to get reclaimed?
 

Yeah, something like that. The connection is definitely closed when the
child exits.


/Per

-- 
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Re: [PHP] Fork and zombies


 I think your waitpid() is in the wrong place, and at least you need use
 WNOHANG - unless you specifically want to wait for each child to finish
 before starting another one.

  But it still has the same problem, and I'm also trying to avoid
  pcntl_wait or pcntl_waitpid at all because I still want to do it
  asynchronously.

 pcntl_wait(WNOHANG) will make everything work asynchronously.


Ah, I was changing it to waiting for each child to finish in order to see if
I could narrow down my db problem, because I figure this should be more or
less equivalent to running it synchronously.  Even like this, though, it
still causes the db problem.

[PHP] Re: Studying IF statements

2009-03-17 Thread Gary

Shawn

Thanks for the help, and your right, I peeked ahead and the lesson goes in 
that direction.

Thanks again

Gary

Shawn McKenzie nos...@mckenzies.net wrote in message 
news:cf.57.22219.f310f...@pb1.pair.com...
 Shawn McKenzie wrote:
 Gary wrote:
 Shawn

 Thanks for your reply.  Some of what you are saying is a little ahead of 
 my
 lessons, but let me address as best I can. The script worked fine in the
 previous lesson where I was to send emails from my DB, this lesson is to
 kill the email from being sent if empty.

 On your very first line you haven't surround the email in quotes (only
 one quote).
 That worked fine with the single quotes and is listed in the book that 
 way.

 Then later in the line $dbc =
 mysqli_connect(hostet',UN,'PW','DB') or die('Error connecting to MySQL
 server'); you're missing a quote before hostet.
 The single quote was deleted when I was sanitizing the code to post 
 here,
 but it is in the code...sorry.

 So the jist of what you are saying is to add die after the if
 statements...but they are not in the book

 *

 I tried your code and it was not working either, am getting a parse 
 error

 Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in
 on line 109
  Line 109 die 'You forgot to enter a subject and or text in the
 body! br/Click the back buttonbr /';

 Shawn McKenzie nos...@mckenzies.net wrote in message
 news:b8.22.22219.724fe...@pb1.pair.com...
 Gary wrote:
 Reading a book on php/mysql (Head First) and the following code is not
 working, athough I am pretty sure I have it as they say to. Trying to
 kill a
 sendmail script if I forget to enter a subject or text in body of 
 email.
 I
 am getting the echo, but it is still sending the emails out.

 What am I missing here?

 Thanks.

 Gary

 ?php
$from = em...@email.com';
$subject =$_POST['subject'];
$text =$_POST['body_of_mail'];

if(empty($subject)) {
if(empty($body_of_mail)){

echo 'You forgot to enter a subject and or text in the body! br 
 /';


$dbc = mysqli_connect(hostet',UN,'PW','DB')
   or die('Error connecting to MySQL server');

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



 while ($row = mysqli_fetch_array($result)) {
 $to = $row['email'];
$first_name = $row['first_name'];
  $last_name = $row['last_name'];
  $msg = Dear $first_name $last_name,\n$text;
  mail($to, $subject, $msg, 'From:' . $from);
  echo 'Email sent to: ' . $to . 'br /';
   }
 $msg =Dear $first_name.' '.$last_name\n $text;
 mail($to,$subject,$msg,$from);
 echo Email sent to: $to br / ;

mysqli_close($dbc);

}
  }

?


 Well, first, it shouldn't do anything because you have parse errors 
 that
 should stop the script.

 On your very first line you haven't surround the email in quotes (only
 one quote).  Then later in the line $dbc =
 mysqli_connect(hostet',UN,'PW','DB') or die('Error connecting to MySQL
 server'); you're missing a quote before hostet.

 Second, you look for empty vars and if they are empty then you echo 
 that
 they forgot to enter them but go on to send the emails anyway.

 Then you loop through a database result and send to everyone and then
 you send another one to the last person you just sent to.

 Try this:

 ?php

   $from = 'em...@email.com';
   $subject =$_POST['subject'];
   $text =$_POST['body_of_mail'];

   if(empty($subject) || empty($body_of_mail)) {
 die 'You forgot to enter a subject and or text in the body! br
 /Click the back buttonbr /';
 } else {
 $dbc = mysqli_connect('hostet',UN,'PW','DB') or die('Error connecting
 to MySQL server');

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

 while ($row = mysqli_fetch_array($result)) {
 $to = $row['email'];
 $first_name = $row['first_name'];
 $last_name = $row['last_name'];
 $msg = Dear $first_name $last_name,\n$text;
 mail($to, $subject, $msg, 'From:' . $from);
 echo 'Email sent to: ' . $to . 'br /';
 }
 mysqli_close($dbc);
  }

 ?

 -- 
 Thanks!
 -Shawn
 http://www.spidean.com


 So goes the typing code in to email :-)

 Try replacing the die line with:

 die('You forgot to enter a subject and or text in the body!br /Click
 the back button.br /');


 This is just an example using the code that you posted as a learning
 exercise.

 Your original IF said:  if $subject is empty, then evaluate the next if
 $body_of_mail is empty, if so, then echo 'You forgot to enter a subject
 and or text in the body! br /' THEN execute the rest of the code which
 returns records from the db and then loops through them and send an
 email to the addresses from the db query.

 I just added a die() which kills the script execution IF the fields are
 empty and an ELSE, which is evaluated if the fields are NOT empty, that
 does the db query and email.

 In a real world example, instead of die() you might reload the form and
 display a

Re: [PHP] Anyone know of a project like Redmine written in PHP?

2009-03-17 Thread Jan G.B.

Yes, recently the developer of JotBug anounced his project. I guess
the project still needs help.
All I have is the public CVS acces so far..
Check out
http://www.jotbug.org/projects
http://code.google.com/p/jotbug/

byebye

2009/3/17 mike mike...@gmail.com:
 http://www.redmine.org/

 Looks pretty useful; I want one in PHP though.

 Anyone?

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[PHP] Re: Fork and zombies

(Apologies for topposting, I'm on my blackberry). Hm, so you think
exiting from the child thread causes the db resource to get reclaimed?

On 3/17/09, Per Jessen p...@computer.org wrote:
 Waynn Lue wrote:

 Ah, I was changing it to waiting for each child to finish in order to
 see if I could narrow down my db problem, because I figure this should
 be more or
 less equivalent to running it synchronously.  Even like this, though,
 it still causes the db problem.

 I think the database problem is caused by your child inheriting the
 connection, and then closing it - whilst the parent is still using it.
 Your parent needs to open a new connection.


 /Per

 --
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[PHP] Multithreading in PHP

2009-03-17 Thread Manoj Singh

Hi Guys,

I am creating a page which submits the form through Ajax request  the
submitted page is sending the mails to n number of users. Now until the mail
sends or the page process completed the end user has to wait.

Is it possible that server sends the response to the client  then start
processing so that the client doesn't have to wait for the server response.

Please suggest.

Regards,
Manoj

Re: [PHP] Multithreading in PHP

2009-03-17 Thread Manoj Singh

Hi Alpar,

Thanks for reply.

Actually the form is submitted through ajax request and the validation is
checking on the server side. So if any error occurs on submission of form,
then we are displaying the errors to the user. And is there is no error,
then the submitted page started processing. So here client has to wait until
the page process completed or not. What i want here if possible, after
validating the user input server sends the thanks response to the client so
that cleint doesn't has to wait, then the server starts the processing.
Please suggest if it is possible.

Regards,
Manoj



On Tue, Mar 17, 2009 at 7:01 PM, Alpár Török torokal...@gmail.com wrote:

 2009/3/17 Manoj Singh manojsingh2...@gmail.com:
  Hi Guys,
 
  I am creating a page which submits the form through Ajax request  the
  submitted page is sending the mails to n number of users. Now until the
 mail
  sends or the page process completed the end user has to wait.
 
  Is it possible that server sends the response to the client  then start
  processing so that the client doesn't have to wait for the server
 response.
 
  Please suggest.
 
  Regards,
  Manoj
 
 Since you are using Ajax requests, which by their nature are
 asynchronous , your user won't have to wait. You can write some JS
 code to let him know that the request was sent, and just let the ajax
 call run in the background. On the server side make sure to ignore
 user abort, just in case the user navigates away.


 --
 Alpar Torok

[PHP] /home/{user}/directory

In my scripts, I usually define a boolean constant DEBUG.  True looks for
local copies of includes and echoes queries as they're used.

My question is:

Is there any way for me to reflect the actual home folder of the person
running the script?  So it will be /home/george/foo when I run it but, for
another user, it would be /home/their-username/foo?

Re: [PHP] Multithreading in PHP

2009-03-17 Thread Alpár Török

2009/3/17 Manoj Singh manojsingh2...@gmail.com:
 Hi Guys,

 I am creating a page which submits the form through Ajax request  the
 submitted page is sending the mails to n number of users. Now until the mail
 sends or the page process completed the end user has to wait.

 Is it possible that server sends the response to the client  then start
 processing so that the client doesn't have to wait for the server response.

 Please suggest.

 Regards,
 Manoj

Since you are using Ajax requests, which by their nature are
asynchronous , your user won't have to wait. You can write some JS
code to let him know that the request was sent, and just let the ajax
call run in the background. On the server side make sure to ignore
user abort, just in case the user navigates away.


-- 
Alpar Torok

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Re: [PHP] Multithreading in PHP

2009-03-17 Thread Jo�o C�ndido de Souza Neto

My suggestion is that you can start a second ajax as soon as the response 
about validating data is returned to process everithing you need and so your 
user wont wait until the process is finished.

João Cândido

Manoj Singh manojsingh2...@gmail.com escreveu na mensagem 
news:3859a530903170639m6c2af2b2s941446a31103c...@mail.gmail.com...
Hi Alpar,

Thanks for reply.

Actually the form is submitted through ajax request and the validation is
checking on the server side. So if any error occurs on submission of form,
then we are displaying the errors to the user. And is there is no error,
then the submitted page started processing. So here client has to wait until
the page process completed or not. What i want here if possible, after
validating the user input server sends the thanks response to the client so
that cleint doesn't has to wait, then the server starts the processing.
Please suggest if it is possible.

Regards,
Manoj



On Tue, Mar 17, 2009 at 7:01 PM, Alpár Török torokal...@gmail.com wrote:

 2009/3/17 Manoj Singh manojsingh2...@gmail.com:
  Hi Guys,
 
  I am creating a page which submits the form through Ajax request  the
  submitted page is sending the mails to n number of users. Now until the
 mail
  sends or the page process completed the end user has to wait.
 
  Is it possible that server sends the response to the client  then start
  processing so that the client doesn't have to wait for the server
 response.
 
  Please suggest.
 
  Regards,
  Manoj
 
 Since you are using Ajax requests, which by their nature are
 asynchronous , your user won't have to wait. You can write some JS
 code to let him know that the request was sent, and just let the ajax
 call run in the background. On the server side make sure to ignore
 user abort, just in case the user navigates away.


 --
 Alpar Torok




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Re: [PHP] /home/{user}/directory

2009-03-17 Thread Thiago H. Pojda

On Tue, Mar 17, 2009 at 10:42 AM, George Larson
george.g.lar...@gmail.comwrote:

 In my scripts, I usually define a boolean constant DEBUG.  True looks for
 local copies of includes and echoes queries as they're used.

 My question is:

 Is there any way for me to reflect the actual home folder of the person
 running the script?  So it will be /home/george/foo when I run it but,
 for
 another user, it would be /home/their-username/foo?


Just checking, you're running PHP on CLI then, right?

If it's running on normal apache setup the user would always be the user
which apache is running.


Thiago Henrique Pojda
http://nerdnaweb.blogspot DOT com

Re: [PHP] /home/{user}/directory

Thanks!

On Tue, Mar 17, 2009 at 9:46 AM, Stuart stut...@gmail.com wrote:

 2009/3/17 George Larson george.g.lar...@gmail.com

 In my scripts, I usually define a boolean constant DEBUG.  True looks for
 local copies of includes and echoes queries as they're used.

 My question is:

 Is there any way for me to reflect the actual home folder of the person
 running the script?  So it will be /home/george/foo when I run it but,
 for
 another user, it would be /home/their-username/foo?


 $dir = realpath('~/foo');

 -Stuart

 --
 http://stut.net/

Re: [PHP] /home/{user}/directory

That is correct.  PHP on CLI.  Thanks!

On Tue, Mar 17, 2009 at 9:51 AM, Thiago H. Pojda thiago.po...@gmail.comwrote:

 On Tue, Mar 17, 2009 at 10:42 AM, George Larson george.g.lar...@gmail.com
  wrote:

 In my scripts, I usually define a boolean constant DEBUG.  True looks for
 local copies of includes and echoes queries as they're used.

 My question is:

 Is there any way for me to reflect the actual home folder of the person
 running the script?  So it will be /home/george/foo when I run it but,
 for
 another user, it would be /home/their-username/foo?


 Just checking, you're running PHP on CLI then, right?

 If it's running on normal apache setup the user would always be the user
 which apache is running.


 Thiago Henrique Pojda
 http://nerdnaweb.blogspot DOT com

Re: [PHP] Multithreading in PHP

2009-03-17 Thread Sudheer Satyanarayana


Manoj Singh wrote:

Hi Guys,

I am creating a page which submits the form through Ajax request  the
submitted page is sending the mails to n number of users. Now until the mail
sends or the page process completed the end user has to wait.

Is it possible that server sends the response to the client  then start
processing so that the client doesn't have to wait for the server response.


  

I can think of two ways to solve this apart from creating an Ajax request:

1. Queue the emails. Run a cron job to process the queue later.
2. Send the email after you flush the output.


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Sudheer. S
Business: http://binaryvibes.co.in, Tech stuff: http://techchorus.net, 
Personal: http://sudheer.net


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Re: [PHP] Multithreading in PHP

2009-03-17 Thread Manoj Singh

Hi Sudheer,

Can you please put more focus or sample code for the second option which you
have suggested Send the email after you flush the output..

Regards,
Manoj

On Tue, Mar 17, 2009 at 7:28 PM, Sudheer Satyanarayana 
sudhee...@binaryvibes.co.in wrote:

 Manoj Singh wrote:

 Hi Guys,

 I am creating a page which submits the form through Ajax request  the
 submitted page is sending the mails to n number of users. Now until the
 mail
 sends or the page process completed the end user has to wait.

 Is it possible that server sends the response to the client  then start
 processing so that the client doesn't have to wait for the server
 response.




 I can think of two ways to solve this apart from creating an Ajax request:

 1. Queue the emails. Run a cron job to process the queue later.
 2. Send the email after you flush the output.


 --

 With warm regards,
 Sudheer. S
 Business: http://binaryvibes.co.in, Tech stuff: http://techchorus.net,
 Personal: http://sudheer.net



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Re: [PHP] Multithreading in PHP

2009-03-17 Thread Sudheer Satyanarayana


Manoj Singh wrote:

Hi Sudheer,

Can you please put more focus or sample code for the second option 
which you have suggested Send the email after you flush the output..



?php
//Code to send some output to user
...
...
...
echo Email will be sent to you shortly;
//Time to send email
//Send all other output before this line
ob_flush();
flush();

//Code to send email
//echo Email sent;

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Sudheer. S
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Personal: http://sudheer.net


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Re: [PHP] /home/{user}/directory

2009-03-17 Thread Stuart

2009/3/17 George Larson george.g.lar...@gmail.com

 In my scripts, I usually define a boolean constant DEBUG.  True looks for
 local copies of includes and echoes queries as they're used.

 My question is:

 Is there any way for me to reflect the actual home folder of the person
 running the script?  So it will be /home/george/foo when I run it but,
 for
 another user, it would be /home/their-username/foo?


$dir = realpath('~/foo');

-Stuart

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[PHP] Re: strcmp() versus ==

2009-03-17 Thread Shawn McKenzie

Clancy wrote:
 On Mon, 16 Mar 2009 17:06:35 -0500, nos...@mckenzies.net (Shawn McKenzie) 
 wrote:
 
 Shawn McKenzie wrote:
 Paul M Foster wrote:
 I had never completely read over the rules with regard to comparisons in
 PHP, and was recently alarmed to find that $str1 == $str2 might not
 compare the way I thought they would. Is it common practice among PHP
 coders to use strcmp() instead of == in making string comparisons? Or am
 I missing/misreading something?

 Paul

 I would use $str1 === $str2 if you want to make sure they are both
 strings and both the same value.

 Since PHP is loosely typed, 0 == 0 is true however 0 === 0 is false.

 If you want to force a string comparison you can also use:

 (string)$str1 == (string)$str2
 
 Recently there was some discussion about inexplicable results from sorting 
 alphanumeric
 strings.  Inspired by your suggestion I filled in an array with random 4 
 character
 alphanumeric strings, and then wrote a simple bubblesort.  I made two copies 
 of the array,
 and sorted one using a simple comparison, and the other using the above 
 comparison.  The
 initial values of the array were :
 
   $aa = array 
 ('ASDF','01A3','0A13',1,'00A3','','001A','','7205','00Z0'); 
 
 (There are no letter 'O's in this),
 
 And the results I got were:
 
 Tb2_38: Original   Raw comp   String Comp
 ASDF   
 01A300A3   001A
 0A1301A3   00A3
 1   0A13   00Z0
 00A3ASDF   01A3
   0A13
 001A1 1
 001A   7205
 720500Z0   ASDF
 00Z07205   
 
 Apart from the out of place '1', apparently treated as '1000', which I threw 
 in out of
 curiosity, the string comparison gave the expected results, but I cannot see 
 the logic of
 the raw comparison.  Can anybody explain these results?
 
 Clancy
 
 If anyone is suspicious the actual code I used was:
 
 
   $aa = array 
 ('ASDF','01A3','0A13',1,'00A3','','001A','','7205','00Z0'); 
 
   $k = count ($aa); $bb = $aa; $cc = $aa;
   while ($k  1)
   {
   $i = 0; $j = 1; while ($j  $k)
   {
   if ($cc[$i]  $cc[$j])
   {
   $t = $cc[$i]; $cc[$i] = $cc[$j]; $cc[$j] = $t;
   }
   ++$i; ++$j;
   }
   --$k;
   }
 
   $k = count ($aa);
   while ($k  1)
   {
   $i = 0; $j = 1; while ($j  $k)
   {
   if ((string)$bb[$i]  (string)$bb[$j])
   {
   $t = $bb[$i]; $bb[$i] = $bb[$j]; $bb[$j] = $t;
   }
   ++$i; ++$j;
   }
   --$k;
   }
 
 echo 'pTb2_38: Originalnbsp;nbsp;nbsp;Raw comp nbsp;nbsp;String 
 Comp/p'; 
   $i = 0; $k = count ($aa);
   while ($i  $k)
   {
   echo 'pnbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; 
   nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; '.$aa[$i].
   'nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;'.$cc[$i].
  
 'nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;'.$bb[$i].'/p';
   ++$i;
   }

Just a quick look, your original post was about comparing strings and
as far as I know, unless you force a string comparison the  and  will
do a numerical comparison, and even if I'm wrong, anything compared to
your 1 will be a numerical comparison.  If your just trying to sort,
check out sort() and natsort().


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-Shawn
http://www.spidean.com

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[PHP] Check this out - Videos on how to protect your website against hackers

2009-03-17 Thread Arne1983

Hi!

Thank you for checking out this thread.

I'm working on some killer videos right now that will explain in detail how
you can protect your website against hackers. The first part of the video
series is live right now and it covers Cross-Site Request Forgery (CSRF). Go
ahead and check them out right now: www.aachen-method.com

This knowledge is essential in making your websites secure and once you have
a deep understanding of PHP security you can confidently charge higher rates
when you are programming for other people.

I have worked hard on making my videos easy to understand and if you watch
them in sequence you will have no problem keeping up, even if you are just
starting out with PHP programming. You can just copy and paste everything
right into your code, it's that simple! The only thing that you might have
to change is variable names so that it works with your code and that
shouldn't be a problem.
And I have inserted my e-mail address at the end of every video if you
happen to have a question, so please don't hesitate to contact me and I'll
try to get back to you as soon as I can.

There is no sales pitch anywhere on that website, not even ads! This is
because I've been programming PHP since 2001 and since the PHP community has
given me so much over the years I now want to give back by providing some
killer content. I realize that some people might regard this message as
spam, especially because I'm new to this forum. However please understand
that I'm just trying to show these videos to as many people as possible so
that we as a community can start to eliminate these vulnerabilities from
people's PHP code.

Arne

P.S.: Here's the link again: www.aachen-method.com
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[PHP] Re: Anyone know of a project like Redmine written in PHP?

2009-03-17 Thread Micah Gersten

mike wrote:
 http://www.redmine.org/
 
 Looks pretty useful; I want one in PHP though.
 
 Anyone?

Mantis Bug Tracker has some of the features you are looking for:
http://www.mantisbt.org/

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Re: [PHP] Re: mail() is duplicating

2009-03-17 Thread Ashley Sheridan

On Fri, 2009-03-13 at 22:54 -0300, Manuel Lemos wrote:
 Hello,
 
 on 03/13/2009 05:37 PM Rick Pasotto said the following:
  I have several forms on my site that use the same sequence of events:
  The first script displays and validates the form data, the second
  reformats and asks for confirmation or editing, and the third script
  sends the data in an email to the relevent people.
  
  Two of these forms work exactly as they're supposed to but the third
  sends duplicate emails to everyone.
  
  I have looked and looked and I've run diff and I can see no reason why
  this should be happening.
  
  Could someone suggest what I might have wrong?
 
 Usually this happens when you have a To: header in the headers parameters.
 
 -- 
 
 Regards,
 Manuel Lemos
 
 Find and post PHP jobs
 http://www.phpclasses.org/jobs/
 
 PHP Classes - Free ready to use OOP components written in PHP
 http://www.phpclasses.org/
 
Another possibility is that the mail sending is triggered from a page
that is called from a get request rather than post. Some browsers
actually make more than one call when the page is get, thereby
triggering the duplicate mail creation. I had a similar thing with a
database update once before, it's a bugger to be rid of without
switching to post.


Ash
www.ashleysheridan.co.uk


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[PHP] Re: Multithreading in PHP

2009-03-17 Thread Manuel Lemos

Hello,

on 03/17/2009 10:14 AM Manoj Singh said the following:
 I am creating a page which submits the form through Ajax request  the
 submitted page is sending the mails to n number of users. Now until the mail
 sends or the page process completed the end user has to wait.
 
 Is it possible that server sends the response to the client  then start
 processing so that the client doesn't have to wait for the server response.

You will need to use AJAX/COMET requests. Regular XMLHttpRequest AJAX
requests will not do because when you send the AJAX response your script
 exits.

With AJAX/COMET requests you can send several responses to the same
request without exiting the script, so you can show progress report.

Take a look at these articles:

http://www.phpclasses.org/blog/post/58-Responsive-AJAX-applications-with-COMET.html

http://www.phpclasses.org/blog/post/51-PHPClasses-20-Beta-AJAX-XMLHttpRequest-x-IFrame.html


This forms class comes with an AJAX/COMET plug-in that allows you to
show progress of a task running on the server without page reloading in
a single request.

http://www.phpclasses.org/formsgeneration

Here is is a live example script that show progress of a task running on
the server after the form is submitted.

http://www.meta-language.net/forms-examples.html?example=test_ajax_form


-- 

Regards,
Manuel Lemos

Find and post PHP jobs
http://www.phpclasses.org/jobs/

PHP Classes - Free ready to use OOP components written in PHP
http://www.phpclasses.org/

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Re: [PHP] Re: Fork and zombies

2009-03-17 Thread Jochem Maas

Per Jessen schreef:
 Waynn Lue wrote:
 
 (Apologies for topposting, I'm on my blackberry). Hm, so you think
 exiting from the child thread causes the db resource to get reclaimed?

 
 Yeah, something like that. The connection is definitely closed when the
 child exits.
 

I can confirm this. you definitely need to open a connection for each child 
process.
if you require a db connection in the parent process, you should close
it before forking (and then reopen it afterwards if you still need it).

at least that's what I found I had to do when I ran into this.
incidently my forking loop looks like this, very interested to know if
Per can spot any obvious stupidity:

$childProcs = array();
do {
if (count($childProcs) = $maxChildProcs) {
$site = array_shift($sites);
$pid  = pcntl_fork();
} else {
// stay as parent, no fork, try to reduce number of child processes
$site = null;
$pid  = null;
}

switch (true) {
case ($pid === -1):
cronLog(error: (in {$thisScript}), cannot initialize worker 
process in order to run {$script} for {$site['name']});
break;

case ($pid === 0):
// we are child

$exit   = 0;
$output = array();

// do we want to exec? or maybe include?
if ($doExec) {
exec($script.' '.$site['id'], $output, $exit);
} else {
$output = inc($script);
$output = explode(\n, $output);
}

if ($exit != 0)
cronLog(error: (in {$thisScript}), {$script} reported an error 
($exit) whilst processing for {$site['name']},);

foreach ($output as $line)
cronLog($line);

exit($exit);
break;

default:
// we are parent
$childProcs[] = $pid;

do {
$status = null;
while (pcntl_wait($status, WNOHANG | WUNTRACED)  1)
usleep(5);

foreach ($childProcs as $k = $v)
if (!posix_kill($v, 0)) // send signal 'zero' to check 
whether process is still 'up'
unset($childProcs[ $k ]);

$childProcs = array_values($childProcs);

if (count($sites))
break; // more sites to run the given script for
if (!count($childProcs))
break; // no more sites to run the given script for and all 
children are complete/dead

} while (true);
break;
}


if (!count($sites))
break; // nothing more to do

usleep(5);
} while (true);


 
 /Per
 


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Re: [PHP] Re: Fork and zombies

If Fork and Zombies was a diner...  I would totally eat there.

On Tue, Mar 17, 2009 at 5:00 PM, Jochem Maas joc...@iamjochem.com wrote:

 Per Jessen schreef:
  Waynn Lue wrote:
 
  (Apologies for topposting, I'm on my blackberry). Hm, so you think
  exiting from the child thread causes the db resource to get reclaimed?
 
 
  Yeah, something like that. The connection is definitely closed when the
  child exits.
 

 I can confirm this. you definitely need to open a connection for each child
 process.
 if you require a db connection in the parent process, you should close
 it before forking (and then reopen it afterwards if you still need it).

 at least that's what I found I had to do when I ran into this.
 incidently my forking loop looks like this, very interested to know if
 Per can spot any obvious stupidity:

 $childProcs = array();
 do {
if (count($childProcs) = $maxChildProcs) {
$site = array_shift($sites);
$pid  = pcntl_fork();
} else {
// stay as parent, no fork, try to reduce number of child processes
$site = null;
$pid  = null;
}

switch (true) {
case ($pid === -1):
cronLog(error: (in {$thisScript}), cannot initialize worker
 process in order to run {$script} for {$site['name']});
break;

case ($pid === 0):
// we are child

$exit   = 0;
$output = array();

// do we want to exec? or maybe include?
if ($doExec) {
exec($script.' '.$site['id'], $output, $exit);
} else {
$output = inc($script);
$output = explode(\n, $output);
}

if ($exit != 0)
cronLog(error: (in {$thisScript}), {$script} reported an
 error ($exit) whilst processing for {$site['name']},);

foreach ($output as $line)
cronLog($line);

exit($exit);
break;

default:
// we are parent
$childProcs[] = $pid;

do {
$status = null;
while (pcntl_wait($status, WNOHANG | WUNTRACED)  1)
usleep(5);

foreach ($childProcs as $k = $v)
if (!posix_kill($v, 0)) // send signal 'zero' to check
 whether process is still 'up'
unset($childProcs[ $k ]);

$childProcs = array_values($childProcs);

if (count($sites))
break; // more sites to run the given script for
if (!count($childProcs))
break; // no more sites to run the given script for and
 all children are complete/dead

} while (true);
break;
}


if (!count($sites))
break; // nothing more to do

usleep(5);
 } while (true);


 
  /Per
 


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Re: [PHP] Re: Fork and zombies

2009-03-17 Thread Ashley Sheridan

On Tue, 2009-03-17 at 17:06 -0400, George Larson wrote:
 If Fork and Zombies was a diner...  I would totally eat there.

For fork sake... ;)


Ash
www.ashleysheridan.co.uk


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Re: [PHP] Re: Fork and zombies

Jochem Maas wrote:

 Per Jessen schreef:
 Waynn Lue wrote:
 
 (Apologies for topposting, I'm on my blackberry). Hm, so you think
 exiting from the child thread causes the db resource to get
 reclaimed?

 
 Yeah, something like that. The connection is definitely closed when
 the child exits.
 
 
 I can confirm this. you definitely need to open a connection for each
 child process. if you require a db connection in the parent process,
 you should close it before forking (and then reopen it afterwards if
 you still need it).

Yep, exactly my thinking. 

 at least that's what I found I had to do when I ran into this.
 incidently my forking loop looks like this, very interested to know if
 Per can spot any obvious stupidity:

I doubt it. 
I can't quite follow your code after the pcntl_wait where you've got a
pcntl_kill(), but it looks like an insurance policy?  just in case ?


/Per

-- 
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Re: [PHP] Re: mail() is duplicating

2009-03-17 Thread Manuel Lemos

Hello,

on 03/17/2009 05:34 PM Ashley Sheridan said the following:
 I have several forms on my site that use the same sequence of events:
 The first script displays and validates the form data, the second
 reformats and asks for confirmation or editing, and the third script
 sends the data in an email to the relevent people.

 Two of these forms work exactly as they're supposed to but the third
 sends duplicate emails to everyone.

 I have looked and looked and I've run diff and I can see no reason why
 this should be happening.

 Could someone suggest what I might have wrong?
 Usually this happens when you have a To: header in the headers parameters.

 Another possibility is that the mail sending is triggered from a page
 that is called from a get request rather than post. Some browsers
 actually make more than one call when the page is get, thereby
 triggering the duplicate mail creation. I had a similar thing with a
 database update once before, it's a bugger to be rid of without
 switching to post.

I suspect that may happen with nervous users that double click form
submit buttons.

Usually I use this forms class that has a built-in feature to show a
form resubmit confirmation message when the use uses the submit function
more than once:

http://www.phpclasses.org/formsgeneration

That feature can be seen in this page:

http://www.meta-language.net/forms-examples.html?example=test_form

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Manuel Lemos

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http://www.phpclasses.org/jobs/

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[PHP] Form to pdf

2009-03-17 Thread Gary

Is it possible to create an online form, that when filled out the fields 
will can be placed in a pdf form? 



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Re: [PHP] Re: Fork and zombies

2009-03-17 Thread Jochem Maas

Per Jessen schreef:
 Jochem Maas wrote:
 
 Per Jessen schreef:
 Waynn Lue wrote:

 (Apologies for topposting, I'm on my blackberry). Hm, so you think
 exiting from the child thread causes the db resource to get
 reclaimed?

 Yeah, something like that. The connection is definitely closed when
 the child exits.

 I can confirm this. you definitely need to open a connection for each
 child process. if you require a db connection in the parent process,
 you should close it before forking (and then reopen it afterwards if
 you still need it).
 
 Yep, exactly my thinking. 
 
 at least that's what I found I had to do when I ran into this.
 incidently my forking loop looks like this, very interested to know if
 Per can spot any obvious stupidity:
 
 I doubt it. 
 I can't quite follow your code after the pcntl_wait where you've got a
 pcntl_kill(), but it looks like an insurance policy?  just in case ?
 

correct, from my reading the pcntl_kill() with a signal argument of zero should
return true if it is *able* to send the signal (but it doesn't actually send 
anything),
given that it's only checking it's own children the parent process must able to
send them signals assuming they're not somehow dead ... so yeah, insurance 
policy :-)

 
 /Per
 


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[PHP] assign associative array values to variables?

I have been tearing out my hair to figure out a way to place array
values into $variables with not much luck. I can echo the array to the
screen but I can not manipulate the results.
I have searched wide and far all day on the web and I find nothing that
points the way how to extract values from an associative array and
assign them to a variable.
I expected to find some elegant way to do it. Here's the code that
outputs the values:
if ( isset( $book_categories[$bookID] ) ) {
   foreach ( $book_categories[$bookID] AS $categoryID ) {
  if ( isset( $category[$categoryID] ) ) {
  echo($category[$categoryID]['category']);
  }
  }
   }

this will echo something like CivilizationGods And GoddessesHistorical
PeriodsSociology  Anthropology (I have not added breaks beween the
categories as there is more manipulation needed on them)

This works for as many categories as needed. Manipulating each value
should not be a problem once it is in a string variable using switch and
preg_replace() as each category needs to be stripped of spaces, commas
and s.

-- 
unheralded genius: A clean desk is the sign of a dull mind. 
-
Phil Jourdan --- p...@ptahhotep.com
   http://www.ptahhotep.com
   http://www.chiccantine.com/andypantry.php


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[PHP] preg_replace() question

1. What is the overhead on preg_replace?
2. Is there a better way to strip spaces and non alpha numerical
characters from text strings? I suspect not... maybe the Shadow does ???
:-D

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Re: [PHP] assign associative array values to variables?

2009-03-17 Thread Chris


PJ wrote:

I have been tearing out my hair to figure out a way to place array
values into $variables with not much luck. I can echo the array to the
screen but I can not manipulate the results.
I have searched wide and far all day on the web and I find nothing that
points the way how to extract values from an associative array and
assign them to a variable.
I expected to find some elegant way to do it. Here's the code that
outputs the values:
if ( isset( $book_categories[$bookID] ) ) {
   foreach ( $book_categories[$bookID] AS $categoryID ) {
  if ( isset( $category[$categoryID] ) ) {
  echo($category[$categoryID]['category']);
  }
  }
   }


Same as other variable assignment.

if ( isset( $category[$categoryID] ) ) {
$myvar = $category[$categoryID];
}

echo $myvar . br/;

Doing it with a multi-dimensional array is no different to a result set 
from a database or any other scenario.


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Re: [PHP] preg_replace() question

2009-03-17 Thread Chris


PJ wrote:

1. What is the overhead on preg_replace?


Compared to what? If you write a 3 line regex, it's going to take some 
processing.



2. Is there a better way to strip spaces and non alpha numerical
characters from text strings? I suspect not... maybe the Shadow does ???


For this, preg_replace is probably the right option.

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Re: [PHP] Re: Fork and zombies


  Yeah, something like that. The connection is definitely closed when the
  child exits.
 

 I can confirm this. you definitely need to open a connection for each child
 process.
 if you require a db connection in the parent process, you should close
 it before forking (and then reopen it afterwards if you still need it).


I thought that too, but this code seems to work, which seems to imply that
the child doesn't kill the existing db connection.

$conn = mysql_connect($sharedAppsDbHost, $sharedAppsDbUser,
 $sharedAppsDbPass, true);

foreach ($things as $thing) {
  temp($thing);
}

function temp($thing) {
  global $conn;
  extract(getInfo($thing)); // this function call uses a shared db
connection
  mysqlSelectDb($dbName, $conn); // dbName is a variable gotten from the
above call
  $result = mysql_query(SELECT COUNT(*) FROM Users,
$conn);
  $row = mysql_fetch_array($result, MYSQL_BOTH);
  echo $row[0]\n;
  $pid = pcntl_fork();
  if ($pid == -1) {
die(could not fork);
  } else if ($pid) {
// parent, return the child pid
echo child pid $pid waiting\n;
pcntl_waitpid($pid, $status, WNOHANG);
if (pcntl_wifexited($status)) {
  echo finished [$status] waiting\n;
  return;
}
  } else {
echo child sleeping\n;
sleep(3);
echo child done\n;
exit;
  }
}

==
My main problem here is that I have a set of helper functions (getInfo is
one of them) that uses a global db connection that exists in that helper
script.  Otherwise, I have to rewrite the function to create a new
connection every time, which I'd like not to.

Waynn

Re: [PHP] Re: Fork and zombies


  Yeah, something like that. The connection is definitely closed when the
  child exits.
 

 I can confirm this. you definitely need to open a connection for each
 child process.
 if you require a db connection in the parent process, you should close
 it before forking (and then reopen it afterwards if you still need it).


 I thought that too, but this code seems to work, which seems to imply that
 the child doesn't kill the existing db connection.

 $conn = mysql_connect($sharedAppsDbHost, $sharedAppsDbUser,
  $sharedAppsDbPass, true);

 foreach ($things as $thing) {
   temp($thing);
 }

 function temp($thing) {
   global $conn;
   extract(getInfo($thing)); // this function call uses a shared db
 connection
   mysqlSelectDb($dbName, $conn); // dbName is a variable gotten from the
 above call
   $result = mysql_query(SELECT COUNT(*) FROM Users,
 $conn);
   $row = mysql_fetch_array($result, MYSQL_BOTH);
   echo $row[0]\n;
   $pid = pcntl_fork();
   if ($pid == -1) {
 die(could not fork);
   } else if ($pid) {
 // parent, return the child pid
 echo child pid $pid waiting\n;
 pcntl_waitpid($pid, $status, WNOHANG);
 if (pcntl_wifexited($status)) {
   echo finished [$status] waiting\n;
   return;
 }
   } else {
 echo child sleeping\n;
 sleep(3);
 echo child done\n;
 exit;
   }
 }

 ==
 My main problem here is that I have a set of helper functions (getInfo is
 one of them) that uses a global db connection that exists in that helper
 script.  Otherwise, I have to rewrite the function to create a new
 connection every time, which I'd like not to.

 Waynn


Whoops, I spoke too soon, I think the sleep(3) causes the child not to exit
before the parent.  If instead I don't pass WNOHANG to the waitpid command,
it does error out.  So it looks like your theory is correct, and I still
have that problem.  I guess the only solution is to rewrite the functions to
use a new db connection every time?  Or maybe I should just sleep the child
thread for long periods of time and hope the parent thread finishes in time
(which admittedly seems really hacky)?

Re: [PHP] assign associative array values to variables?

Chris wrote:
 PJ wrote:
 I have been tearing out my hair to figure out a way to place array
 values into $variables with not much luck. I can echo the array to the
 screen but I can not manipulate the results.
 I have searched wide and far all day on the web and I find nothing that
 points the way how to extract values from an associative array and
 assign them to a variable.
 I expected to find some elegant way to do it. Here's the code that
 outputs the values:
 if ( isset( $book_categories[$bookID] ) ) {
foreach ( $book_categories[$bookID] AS $categoryID ) {
   if ( isset( $category[$categoryID] ) ) {
   echo($category[$categoryID]['category']);
   }
   }
}

 Same as other variable assignment.

 if ( isset( $category[$categoryID] ) ) {
 $myvar = $category[$categoryID];
 }

 echo $myvar . br/;

 Doing it with a multi-dimensional array is no different to a result
 set from a database or any other scenario.

I probably did not express myself clearly; I thought I did:
place array * *values ** into * *$variables **

the output of $myvar above is Array. That, I knew. And that does not
extract. I can see what is in the array in several ways; the problem is
to get the output into $var1, $var2, $var3 ... etc.  How do I convert:

$category[$categoryID]['category'] into up to 4 different variables that I can 
manipulate?
My code above outputs text like this: CivilizationGods And GoddessesHistorical
PeriodsSociology  Anthropology





-- 
unheralded genius: A clean desk is the sign of a dull mind. 
-
Phil Jourdan --- p...@ptahhotep.com
http://www.ptahhotep.com
http://www.chiccantine.com/andypantry.php

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Re: [PHP] assign associative array values to variables?