php-general Digest 8 Jan 2010 07:25:00 -0000 Issue 6527
php-general Digest 8 Jan 2010 07:25:00 - Issue 6527
Topics (messages 300889 through 300897):
Re: First time PHP user question
300889 by: Jim Lucas
cannot access SimpleXML object property
300890 by: Mari Masuda
300891 by: Jonathan Tapicer
300892 by: Mari Masuda
Re: PHP programming strategy; lots of little include files, or a few big ones?
300893 by: clancy_1.cybec.com.au
300894 by: clancy_1.cybec.com.au
300896 by: Robert Cummings
300897 by: clancy_1.cybec.com.au
Re: Site Moved From PHP4 to PHP5 Server - header, location no longer working
300895 by: Vernon Webb
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--
---BeginMessage---
Ashley Sheridan wrote:
On Thu, 2010-01-07 at 08:32 -0500, Rick Dwyer wrote:
Thanks Ashley Nathan.
As it turns out, there is more than one tmp folder... and I was
looking in the wrong one. When I SSH'd in the correct one, I created
the missing file and it began to work properly.
Thanks for chiming in.
--Rick
On Jan 7, 2010, at 7:58 AM, Ashley Sheridan wrote:
On Thu, 2010-01-07 at 09:19 +, Nathan Rixham wrote:
Rick Dwyer wrote:
Hello List.
I have been playing around with PHP, running a few tutorials and
I came
across an error message I could not resolve.
The tutorial is Generating One Time URL's by Oreilly:
http://www.oreillynet.com/pub/a/php/2002/12/05/one_time_URLs.html
Basically the PHP code is supposed to read from a text file and
write to
a text file and serve a text file all located in the tmp
directory of
the server.
However, I receive the error that the referenced files in the PHP
code
could not be found:
Warning: readfile(/tmp/secret_file.txt) [function.readfile]:
failed to
open stream: No such file or directory
in/home/mysite/myfolder/get_file.php on line 67
Line 66 and 67 look like this:
$secretfile = /tmp/secret_file.txt;
readfile($secretfile);
However, in the tmp folder, I have created a simple text file
called
secret_file.txt so I know it exists and it has the permissions
set to
644, so it should be readable.
Can someone point out to me what I am doing wrong? Thanks,
try permissions of 777 and see if the error disappears; odds are v
high
that the httpd user php is running under doesn't have group or owner
permissions for /tmp that secret file.
regards
That shouldn't fix it. 644 permissions allow the owner, group users
and anybody else to read file. Have you tried is_file(/tmp/
secret_file.txt); to see if it actually exists? Also, don't forget
that Linux is case sensitive when it comes to filenames, so
secret_file.txt is completely different from Secret_File.txt, and in-
fact you can validly have both in the same directory.
Thanks,
Ash
http://www.ashleysheridan.co.uk
--Rick
There isn't more than one /tmp folder, that is impossible. There was
probably more than one tmp folder, and you weren't looking in the right
one.
Thanks,
Ash
http://www.ashleysheridan.co.uk
Actually, Ash, you can have more then one /tmp folder. Depends on what app is
looking at it.
If you have PHP running with Apache and Apache is jailed, the the /tmp folder
would be from the perspective to the jail the the actual OS.
So, if apache was jailed to /var/www/ you could then have a /tmp/ and a
/var/www/tmp/
Apache would never see the /tmp/ only the /var/www/tmp/
---End Message---
---BeginMessage---
Hi,
I am working with an XML document and have a SimpleXML object whose var_dump
looks like this:
---
object(SimpleXMLElement)#2 (10) {
[@attributes]=
array(1) {
[id]=
string(7) 3854857
}
[type]=
string(7) Article
[createDate]=
string(25) 2006-09-06T16:42:20-07:00
[editDate]=
string(25) 2007-07-16T09:15:53-07:00
[creator]=
string(19) Michael Gottfredson
[status]=
string(5) ready
[field]=
...snip a bunch of stuff...
}
---
Assuming the above object is referenced by $current_object, I can access the
values of most stuff with $current_object-creator or whatever. However, I
cannot figure out how to access the value of id. I tried the following, none
of which worked for me:
1. $current_object-@attributes-id (gives Parse error: syntax error,
unexpected '@', expecting T_STRING or T_VARIABLE or '{' or '$' in
/Applications/apache/htdocs/test.php on line 33)
2. $current_object-'@attributes'-id (gives Parse error: syntax error,
unexpected T_CONSTANT_ENCAPSED_STRING, expecting T_STRING or T_VARIABLE or '{'
or '$' in/Applications/apache/htdocs/test.php on line 33)
3. $current_object-{...@attributes}-id (no error but is null)
4. $current_object-{'@attributes'}-id (no error
[PHP] Newbie needs help
$content = ... a bunch of text with some !--protected--protected information!--/protected-- with some more text with some more !--protected--tabletrtdmore protected text/td/tr/table!--/protected-- and even !--protected--bsome protected contentb!--/protected--; I want to replace any content between these tags: !--protected--!--/protected-- with say $replacewith = strongprotected content/strong; $content = a bunch of text with some strongprotected content/strong with some more text with some more strongprotected content/strong and even strongprotected content/strong; It's a little more involved than str_replace which is about the limit of my knowledge. Any takers - to take pity on me? I'm trying to figure out some funky WordPress stuff as it is. John -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Unable to get output from exec ssh remote-server 'ping -c4 ip'
see this http://www.phpclasses.org/browse/package/4282.html 2009/12/28 robert mena robert.m...@gmail.com: Hi, I need to develop an interface that will, for example, ping IPs from a remote server. So the php script will be hosted in a server with ssh access (key) to the remote server. I can make it work from the console but when I try $cmd = ssh remote-server 'ping -c 4 ip' exec($cmd, $ouput); the output is empty. the same command (with the remote-server and IP changed to the real ones) works fine from command line. I've added the key/config in the webserver's user .ssh directory so I am assuming that that there is something wrong with my setup. any ideas? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Newbie needs help
try http://www.php.net/manual/en/function.preg-replace-callback.php. you need to read a bit on 'regular expressions' http://www.gskinner.com/RegExr/ will be handy in crafting a suitable regex to capture your 'tags' ~viraj On Thu, Jan 7, 2010 at 2:16 PM, John Taylor-Johnston john.taylor-johns...@cegepsherbrooke.qc.ca wrote: $content = ... a bunch of text with some !--protected--protected information!--/protected-- with some more text with some more !--protected--tabletrtdmore protected text/td/tr/table!--/protected-- and even !--protected--bsome protected contentb!--/protected--; I want to replace any content between these tags: !--protected--!--/protected-- with say $replacewith = strongprotected content/strong; $content = a bunch of text with some strongprotected content/strong with some more text with some more strongprotected content/strong and even strongprotected content/strong; It's a little more involved than str_replace which is about the limit of my knowledge. Any takers - to take pity on me? I'm trying to figure out some funky WordPress stuff as it is. John -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Newbie needs help
Great. Ok. Thanks. [I'm a top quoter)]. I'll look at it.
This was my dirty way of hacking it:
if (($current_user-id == 0) ($user_ID == 0))
{
$content = str_replace('!--protected--', 'bProtected !--', $content);
$content = str_replace('!--/protected--', '-- Content/b a
href=/wp-login.php[Log in here/a]', $content);
}
Cheap Dirty and need refinement :p
viraj wrote:
try http://www.php.net/manual/en/function.preg-replace-callback.php.
you need to read a bit on 'regular expressions'
http://www.gskinner.com/RegExr/ will be handy in crafting a suitable
regex to capture your 'tags'
~viraj
On Thu, Jan 7, 2010 at 2:16 PM, John Taylor-Johnston
john.taylor-johns...@cegepsherbrooke.qc.ca wrote:
$content = ... a bunch of text with some!--protected--protected
information!--/protected-- with some more text with some more
!--protected--tabletrtdmore protected
text/td/tr/table!--/protected-- and even!--protected--bsome
protected contentb!--/protected--;
I want to replace any content between these tags:
!--protected--!--/protected--
with say
$replacewith = strongprotected content/strong;
$content = a bunch of text with somestrongprotected content/strong
with some more text with some morestrongprotected content/strong and
evenstrongprotected content/strong;
It's a little more involved than str_replace which is about the limit of my
knowledge.
Any takers - to take pity on me? I'm trying to figure out some funky
WordPress stuff as it is.
John
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[PHP] Call to undefined method on class property!?
I have a singleton database object in a global file at the top of my
document. In most other locations I am able to access it just fine, however
in my footer I want to loop through a properties list for links (I am saving
links to a database, each with its own properties).
Here is the code snippet that is giving me trouble:
footerlinks.inc.php:
?php
$result = $db-query('SELECT * FROM `links` WHERE `category` =
\'footer_navigation\';');
$total = $db-affected_rows;
if ($total 0)
{
$Link = new Link();
$count = $db-affected_rows($result);
$i = 0;
while ($row = $db-fetch_array($result))
{
$properties = $Link-setLinkProperties($row);
$link[$i] = 'a ';
foreach ($properties as $prop)
{
$link[$i] .= $prop;
}
$link[$i] .= '';
$row['text'];
$link[$i] .= '/a';
$i++;
}
$j = 0;
while ($j $link)
{
echo $link[$j];
if ($j $count)
{
echo ' | ';
}
$j++;
}
}
?
The $Link-$Link-setLinkProperties() method is defined in
Link.class.php:
?php
class Link {
public function setLinkProperties($rows)
{
if (!empty($row['href']))
{
$properties['href'] = 'href=' . $row['href'] . ' ';
}
if (!empty($row['class']))
{
$properties['class'] = 'class=' . $row['class'] . ' ';
}
if (!empty($row['style']))
{
$properties['style'] = 'style=' . $row['style'] . ' ';
}
if (!empty($row['title']))
{
$properties['title'] = 'title=' . $row['title'] . ' ';
}
if (!empty($row['name']))
{
$properties['name'] = 'name=' . $row['name'] . ' ';
}
if (!empty($row['target']))
{
$properties['target'] = 'target=' . $row['target'] . ' ';
}
if (!empty($row['rel']))
{
$properties['rel'] = 'rel=' . $row['rel'] . ' ';
}
if (!empty($row['onclick']))
{
$properties['onclick'] = 'onclick=' . $row['onclick'] . ' ';
}
if (!empty($row['ondblclick']))
{
$properties['ondblclick'] = 'ondblclick=' . $row['ondblclick']
. ' ';
}
if (!empty($row['onmouseover']))
{
$properties['onmouseover'] = 'onmouseover=' .
$row['onmouseover'] . ' ';
}
if (!empty($row['onmouseout']))
{
$properties['onmouseout'] = 'onmouseout=' . $row['onmouseout']
. ' ';
}
return $properties;
} // END OF METHOD setLinkProperties
} // END OF CLASS
?
Also for reference, the method query() in my database class sets a value for
$affected_rows:
Database.class.php:
?php
class Database {
private $server = ''; //database server
private $user = ''; //database login name
private $pass = ''; //database login password
private $database = ''; //database name
private $pre = ''; //table prefix
###
//internal info
private $error = '';
private $errno = 0;
//number of rows affected by SQL query
public $affected_rows = 0;
...
?
This is the error I am receiving:
*Fatal error*: Call to undefined method Database::affected_rows() in *
/home/mwclans1/public_html/components/footerlinks.inc.php* on line *9*
Please help PHP gurus!!
Re: [PHP] Call to undefined method on class property!?
Do you have a method in your Database class called affected_rows() ?
From the code you have shown you only have a member variable called
affected_rows and so your call $db-fetch_array($result) is falling
over.
On Thu, Jan 7, 2010 at 8:47 AM, Allen McCabe allenmcc...@gmail.com wrote:
I have a singleton database object in a global file at the top of my
document. In most other locations I am able to access it just fine, however
in my footer I want to loop through a properties list for links (I am saving
links to a database, each with its own properties).
Here is the code snippet that is giving me trouble:
footerlinks.inc.php:
?php
$result = $db-query('SELECT * FROM `links` WHERE `category` =
\'footer_navigation\';');
$total = $db-affected_rows;
if ($total 0)
{
$Link = new Link();
$count = $db-affected_rows($result);
$i = 0;
while ($row = $db-fetch_array($result))
{
$properties = $Link-setLinkProperties($row);
$link[$i] = 'a ';
foreach ($properties as $prop)
{
$link[$i] .= $prop;
}
$link[$i] .= '';
$row['text'];
$link[$i] .= '/a';
$i++;
}
$j = 0;
while ($j $link)
{
echo $link[$j];
if ($j $count)
{
echo ' | ';
}
$j++;
}
}
?
The $Link-$Link-setLinkProperties() method is defined in
Link.class.php:
?php
class Link {
public function setLinkProperties($rows)
{
if (!empty($row['href']))
{
$properties['href'] = 'href=' . $row['href'] . ' ';
}
if (!empty($row['class']))
{
$properties['class'] = 'class=' . $row['class'] . ' ';
}
if (!empty($row['style']))
{
$properties['style'] = 'style=' . $row['style'] . ' ';
}
if (!empty($row['title']))
{
$properties['title'] = 'title=' . $row['title'] . ' ';
}
if (!empty($row['name']))
{
$properties['name'] = 'name=' . $row['name'] . ' ';
}
if (!empty($row['target']))
{
$properties['target'] = 'target=' . $row['target'] . ' ';
}
if (!empty($row['rel']))
{
$properties['rel'] = 'rel=' . $row['rel'] . ' ';
}
if (!empty($row['onclick']))
{
$properties['onclick'] = 'onclick=' . $row['onclick'] . ' ';
}
if (!empty($row['ondblclick']))
{
$properties['ondblclick'] = 'ondblclick=' . $row['ondblclick']
. ' ';
}
if (!empty($row['onmouseover']))
{
$properties['onmouseover'] = 'onmouseover=' .
$row['onmouseover'] . ' ';
}
if (!empty($row['onmouseout']))
{
$properties['onmouseout'] = 'onmouseout=' . $row['onmouseout']
. ' ';
}
return $properties;
} // END OF METHOD setLinkProperties
} // END OF CLASS
?
Also for reference, the method query() in my database class sets a value for
$affected_rows:
Database.class.php:
?php
class Database {
private $server = ''; //database server
private $user = ''; //database login name
private $pass = ''; //database login password
private $database = ''; //database name
private $pre = ''; //table prefix
###
//internal info
private $error = '';
private $errno = 0;
//number of rows affected by SQL query
public $affected_rows = 0;
...
?
This is the error I am receiving:
*Fatal error*: Call to undefined method Database::affected_rows() in *
/home/mwclans1/public_html/components/footerlinks.inc.php* on line *9*
Please help PHP gurus!!
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[PHP] Re: Resin/Quercus
Mattias Thorslund wrote: Hi, I wonder if anyone has experience with running PHP on the Resin server. Opinions, good, bad? Gotchas? Similar projects? http://www.caucho.com/projects/resin/ Thanks, Mattias Resin is excellent - especially if you need to integrate in with java apps closer to the iron, also found it ran most php 5 OO apps a bit faster. Also runs well on glassfish if your so inclined. Regards, -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: First time PHP user question
Rick Dwyer wrote: Hello List. I have been playing around with PHP, running a few tutorials and I came across an error message I could not resolve. The tutorial is Generating One Time URL's by Oreilly: http://www.oreillynet.com/pub/a/php/2002/12/05/one_time_URLs.html Basically the PHP code is supposed to read from a text file and write to a text file and serve a text file all located in the tmp directory of the server. However, I receive the error that the referenced files in the PHP code could not be found: Warning: readfile(/tmp/secret_file.txt) [function.readfile]: failed to open stream: No such file or directory in/home/mysite/myfolder/get_file.php on line 67 Line 66 and 67 look like this: $secretfile = /tmp/secret_file.txt; readfile($secretfile); However, in the tmp folder, I have created a simple text file called secret_file.txt so I know it exists and it has the permissions set to 644, so it should be readable. Can someone point out to me what I am doing wrong? Thanks, try permissions of 777 and see if the error disappears; odds are v high that the httpd user php is running under doesn't have group or owner permissions for /tmp that secret file. regards -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Call to undefined method on class property!?
Allen McCabe wrote:
I have a singleton database object in a global file at the top of my
document. In most other locations I am able to access it just fine, however
in my footer I want to loop through a properties list for links (I am saving
links to a database, each with its own properties).
Here is the code snippet that is giving me trouble:
footerlinks.inc.php:
?php
$result = $db-query('SELECT * FROM `links` WHERE `category` =
\'footer_navigation\';');
$total = $db-affected_rows;
Here you use affected_rows as a class property to assign a value to a
variable.
if ($total 0)
{
$Link = new Link();
$count = $db-affected_rows($result);
Here you call affected_rows as a class method. And from looking at your
Database class. affected_rows is a property not a method. So that
explains the undefined method error.
$i = 0;
while ($row = $db-fetch_array($result))
{
$properties = $Link-setLinkProperties($row);
$link[$i] = 'a ';
foreach ($properties as $prop)
{
$link[$i] .= $prop;
}
$link[$i] .= '';
$row['text'];
$link[$i] .= '/a';
$i++;
}
$j = 0;
while ($j $link)
{
echo $link[$j];
if ($j $count)
{
echo ' | ';
}
$j++;
}
}
?
The $Link-$Link-setLinkProperties() method is defined in
Link.class.php:
?php
class Link {
public function setLinkProperties($rows)
{
if (!empty($row['href']))
{
$properties['href'] = 'href=' . $row['href'] . ' ';
}
if (!empty($row['class']))
{
$properties['class'] = 'class=' . $row['class'] . ' ';
}
if (!empty($row['style']))
{
$properties['style'] = 'style=' . $row['style'] . ' ';
}
if (!empty($row['title']))
{
$properties['title'] = 'title=' . $row['title'] . ' ';
}
if (!empty($row['name']))
{
$properties['name'] = 'name=' . $row['name'] . ' ';
}
if (!empty($row['target']))
{
$properties['target'] = 'target=' . $row['target'] . ' ';
}
if (!empty($row['rel']))
{
$properties['rel'] = 'rel=' . $row['rel'] . ' ';
}
if (!empty($row['onclick']))
{
$properties['onclick'] = 'onclick=' . $row['onclick'] . ' ';
}
if (!empty($row['ondblclick']))
{
$properties['ondblclick'] = 'ondblclick=' . $row['ondblclick']
. ' ';
}
if (!empty($row['onmouseover']))
{
$properties['onmouseover'] = 'onmouseover=' .
$row['onmouseover'] . ' ';
}
if (!empty($row['onmouseout']))
{
$properties['onmouseout'] = 'onmouseout=' . $row['onmouseout']
. ' ';
}
return $properties;
} // END OF METHOD setLinkProperties
} // END OF CLASS
?
Also for reference, the method query() in my database class sets a value for
$affected_rows:
Database.class.php:
?php
class Database {
private $server = ''; //database server
private $user = ''; //database login name
private $pass = ''; //database login password
private $database = ''; //database name
private $pre = ''; //table prefix
###
//internal info
private $error = '';
private $errno = 0;
//number of rows affected by SQL query
public $affected_rows = 0;
...
?
This is the error I am receiving:
*Fatal error*: Call to undefined method Database::affected_rows() in *
/home/mwclans1/public_html/components/footerlinks.inc.php* on line *9*
Please help PHP gurus!!
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: PHP programming strategy; lots of little include files, or a few big ones?
On Thu, Jan 7, 2010 at 04:11, Daevid Vincent dae...@daevid.com wrote: I think it's a case by case basis. Generally File I/O is expensive, but then again, as you say, having everything in a couple files is also sub-optimal for organizing and keeping things modular. That is easily sorted out using automated build tools like Phing, Ant or GNU Make. Either way, I wouldn't worry about the extra I/O unless you've got *a lot* of traffic. -- Daniel Egeberg -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working
On Thu, 2010-01-07 at 16:50 +1030, James McLean wrote: On Thu, Jan 7, 2010 at 1:35 PM, Vernon Webb ver...@comp-wiz.com wrote: I move a number of sites from one server to another and one the one server we had php4 and now we have php5 and since then my server seems to hang every time there is a header, location redirect. Anyone have any ideas on how to resolve this? Is there something I can easily change in the php.ini file that will resolve this issue? Off the top of my head it sounds like something is being output before the header, which causes an error. If you also have error display turned off, you will likely just see a white screen with no useful information. Make sure none of your includes have trailing whitespace or are trying to print out information before the header itself. Best bet is to turn on errors and log them, then you will see where the output started if infact that is your issue. Cheers Don't turn on errors if this machine is public, as it could potentially give out more information to people than you want. First, look at the error logs for PHP, which record all the errors you've had with the site, whether you have them displayed or not. Thanks, Ash http://www.ashleysheridan.co.uk
Re: [PHP] Re: First time PHP user question
On Thu, 2010-01-07 at 09:19 +, Nathan Rixham wrote: Rick Dwyer wrote: Hello List. I have been playing around with PHP, running a few tutorials and I came across an error message I could not resolve. The tutorial is Generating One Time URL's by Oreilly: http://www.oreillynet.com/pub/a/php/2002/12/05/one_time_URLs.html Basically the PHP code is supposed to read from a text file and write to a text file and serve a text file all located in the tmp directory of the server. However, I receive the error that the referenced files in the PHP code could not be found: Warning: readfile(/tmp/secret_file.txt) [function.readfile]: failed to open stream: No such file or directory in/home/mysite/myfolder/get_file.php on line 67 Line 66 and 67 look like this: $secretfile = /tmp/secret_file.txt; readfile($secretfile); However, in the tmp folder, I have created a simple text file called secret_file.txt so I know it exists and it has the permissions set to 644, so it should be readable. Can someone point out to me what I am doing wrong? Thanks, try permissions of 777 and see if the error disappears; odds are v high that the httpd user php is running under doesn't have group or owner permissions for /tmp that secret file. regards That shouldn't fix it. 644 permissions allow the owner, group users and anybody else to read file. Have you tried is_file(/tmp/secret_file.txt); to see if it actually exists? Also, don't forget that Linux is case sensitive when it comes to filenames, so secret_file.txt is completely different from Secret_File.txt, and in-fact you can validly have both in the same directory. Thanks, Ash http://www.ashleysheridan.co.uk
Re: [PHP] Re: First time PHP user question
Thanks Ashley Nathan. As it turns out, there is more than one tmp folder... and I was looking in the wrong one. When I SSH'd in the correct one, I created the missing file and it began to work properly. Thanks for chiming in. --Rick On Jan 7, 2010, at 7:58 AM, Ashley Sheridan wrote: On Thu, 2010-01-07 at 09:19 +, Nathan Rixham wrote: Rick Dwyer wrote: Hello List. I have been playing around with PHP, running a few tutorials and I came across an error message I could not resolve. The tutorial is Generating One Time URL's by Oreilly: http://www.oreillynet.com/pub/a/php/2002/12/05/one_time_URLs.html Basically the PHP code is supposed to read from a text file and write to a text file and serve a text file all located in the tmp directory of the server. However, I receive the error that the referenced files in the PHP code could not be found: Warning: readfile(/tmp/secret_file.txt) [function.readfile]: failed to open stream: No such file or directory in/home/mysite/myfolder/get_file.php on line 67 Line 66 and 67 look like this: $secretfile = /tmp/secret_file.txt; readfile($secretfile); However, in the tmp folder, I have created a simple text file called secret_file.txt so I know it exists and it has the permissions set to 644, so it should be readable. Can someone point out to me what I am doing wrong? Thanks, try permissions of 777 and see if the error disappears; odds are v high that the httpd user php is running under doesn't have group or owner permissions for /tmp that secret file. regards That shouldn't fix it. 644 permissions allow the owner, group users and anybody else to read file. Have you tried is_file(/tmp/ secret_file.txt); to see if it actually exists? Also, don't forget that Linux is case sensitive when it comes to filenames, so secret_file.txt is completely different from Secret_File.txt, and in- fact you can validly have both in the same directory. Thanks, Ash http://www.ashleysheridan.co.uk --Rick -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: First time PHP user question
On Thu, 2010-01-07 at 08:32 -0500, Rick Dwyer wrote: Thanks Ashley Nathan. As it turns out, there is more than one tmp folder... and I was looking in the wrong one. When I SSH'd in the correct one, I created the missing file and it began to work properly. Thanks for chiming in. --Rick On Jan 7, 2010, at 7:58 AM, Ashley Sheridan wrote: On Thu, 2010-01-07 at 09:19 +, Nathan Rixham wrote: Rick Dwyer wrote: Hello List. I have been playing around with PHP, running a few tutorials and I came across an error message I could not resolve. The tutorial is Generating One Time URL's by Oreilly: http://www.oreillynet.com/pub/a/php/2002/12/05/one_time_URLs.html Basically the PHP code is supposed to read from a text file and write to a text file and serve a text file all located in the tmp directory of the server. However, I receive the error that the referenced files in the PHP code could not be found: Warning: readfile(/tmp/secret_file.txt) [function.readfile]: failed to open stream: No such file or directory in/home/mysite/myfolder/get_file.php on line 67 Line 66 and 67 look like this: $secretfile = /tmp/secret_file.txt; readfile($secretfile); However, in the tmp folder, I have created a simple text file called secret_file.txt so I know it exists and it has the permissions set to 644, so it should be readable. Can someone point out to me what I am doing wrong? Thanks, try permissions of 777 and see if the error disappears; odds are v high that the httpd user php is running under doesn't have group or owner permissions for /tmp that secret file. regards That shouldn't fix it. 644 permissions allow the owner, group users and anybody else to read file. Have you tried is_file(/tmp/ secret_file.txt); to see if it actually exists? Also, don't forget that Linux is case sensitive when it comes to filenames, so secret_file.txt is completely different from Secret_File.txt, and in- fact you can validly have both in the same directory. Thanks, Ash http://www.ashleysheridan.co.uk --Rick There isn't more than one /tmp folder, that is impossible. There was probably more than one tmp folder, and you weren't looking in the right one. Thanks, Ash http://www.ashleysheridan.co.uk
RE: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working
That's the odd thing, there is nothing being indicated in the error logs the server just hangs and I have to restart apache in order to get the site back up. First I thought it might be the server so I move over to a different server, but I still have the same issue. What I feel is really odd is the fact that it worked in a previous version of php, so waht's changed? ~V From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: Thu 1/7/2010 7:52 AM To: James McLean Cc: Vernon Webb; php-general@lists.php.net Subject: Re: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working On Thu, 2010-01-07 at 16:50 +1030, James McLean wrote: On Thu, Jan 7, 2010 at 1:35 PM, Vernon Webb ver...@comp-wiz.com wrote: I move a number of sites from one server to another and one the one server we had php4 and now we have php5 and since then my server seems to hang every time there is a header, location redirect. Anyone have any ideas on how to resolve this? Is there something I can easily change in the php.ini file that will resolve this issue? Off the top of my head it sounds like something is being output before the header, which causes an error. If you also have error display turned off, you will likely just see a white screen with no useful information. Make sure none of your includes have trailing whitespace or are trying to print out information before the header itself. Best bet is to turn on errors and log them, then you will see where the output started if infact that is your issue. Cheers Don't turn on errors if this machine is public, as it could potentially give out more information to people than you want. First, look at the error logs for PHP, which record all the errors you've had with the site, whether you have them displayed or not. Thanks, Ash http://www.ashleysheridan.co.uk http://www.ashleysheridan.co.uk/ -- This message has been scanned for viruses and dangerous content by comp-wiz.com http://comp-wiz.com/ , and is believed to be clean.
RE: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working
On Thu, 2010-01-07 at 08:40 -0500, Vernon Webb wrote: That's the odd thing, there is nothing being indicated in the error logs the server just hangs and I have to restart apache in order to get the site back up. First I thought it might be the server so I move over to a different server, but I still have the same issue. What I feel is really odd is the fact that it worked in a previous version of php, so waht's changed? ~V From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: Thu 1/7/2010 7:52 AM To: James McLean Cc: Vernon Webb; php-general@lists.php.net Subject: Re: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working On Thu, 2010-01-07 at 16:50 +1030, James McLean wrote: On Thu, Jan 7, 2010 at 1:35 PM, Vernon Webb ver...@comp-wiz.com wrote: I move a number of sites from one server to another and one the one server we had php4 and now we have php5 and since then my server seems to hang every time there is a header, location redirect. Anyone have any ideas on how to resolve this? Is there something I can easily change in the php.ini file that will resolve this issue? Off the top of my head it sounds like something is being output before the header, which causes an error. If you also have error display turned off, you will likely just see a white screen with no useful information. Make sure none of your includes have trailing whitespace or are trying to print out information before the header itself. Best bet is to turn on errors and log them, then you will see where the output started if infact that is your issue. Cheers Don't turn on errors if this machine is public, as it could potentially give out more information to people than you want. First, look at the error logs for PHP, which record all the errors you've had with the site, whether you have them displayed or not. Thanks, Ash http://www.ashleysheridan.co.uk http://www.ashleysheridan.co.uk/ Have you checked both the PHP and Apache error logs? Things like invalid commands in an .htaccess file can cause server crashes. Thanks, Ash http://www.ashleysheridan.co.uk
RE: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working
Didn't know there were php logs, I thought they would be included in the Apache logs, where do I find the php logs? ~V From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: Thu 1/7/2010 8:42 AM To: Vernon Webb Cc: php-general@lists.php.net Subject: RE: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working On Thu, 2010-01-07 at 08:40 -0500, Vernon Webb wrote: That's the odd thing, there is nothing being indicated in the error logs the server just hangs and I have to restart apache in order to get the site back up. First I thought it might be the server so I move over to a different server, but I still have the same issue. What I feel is really odd is the fact that it worked in a previous version of php, so waht's changed? ~V From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: Thu 1/7/2010 7:52 AM To: James McLean Cc: Vernon Webb; php-general@lists.php.net Subject: Re: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working On Thu, 2010-01-07 at 16:50 +1030, James McLean wrote: On Thu, Jan 7, 2010 at 1:35 PM, Vernon Webb ver...@comp-wiz.com wrote: I move a number of sites from one server to another and one the one server we had php4 and now we have php5 and since then my server seems to hang every time there is a header, location redirect. Anyone have any ideas on how to resolve this? Is there something I can easily change in the php.ini file that will resolve this issue? Off the top of my head it sounds like something is being output before the header, which causes an error. If you also have error display turned off, you will likely just see a white screen with no useful information. Make sure none of your includes have trailing whitespace or are trying to print out information before the header itself. Best bet is to turn on errors and log them, then you will see where the output started if infact that is your issue. Cheers Don't turn on errors if this machine is public, as it could potentially give out more information to people than you want. First, look at the error logs for PHP, which record all the errors you've had with the site, whether you have them displayed or not. Thanks, Ash http://www.ashleysheridan.co.uk http://www.ashleysheridan.co.uk/ http://www.ashleysheridan.co.uk/ Have you checked both the PHP and Apache error logs? Things like invalid commands in an .htaccess file can cause server crashes. Thanks, Ash http://www.ashleysheridan.co.uk http://www.ashleysheridan.co.uk/ -- This message has been scanned for viruses and dangerous content by comp-wiz.com http://comp-wiz.com/ , and is believed to be clean.
RE: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working
On Thu, 2010-01-07 at 08:57 -0500, Vernon Webb wrote: Didn't know there were php logs, I thought they would be included in the Apache logs, where do I find the php logs? ~V From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: Thu 1/7/2010 8:42 AM To: Vernon Webb Cc: php-general@lists.php.net Subject: RE: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working On Thu, 2010-01-07 at 08:40 -0500, Vernon Webb wrote: That's the odd thing, there is nothing being indicated in the error logs the server just hangs and I have to restart apache in order to get the site back up. First I thought it might be the server so I move over to a different server, but I still have the same issue. What I feel is really odd is the fact that it worked in a previous version of php, so waht's changed? ~V From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: Thu 1/7/2010 7:52 AM To: James McLean Cc: Vernon Webb; php-general@lists.php.net Subject: Re: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working On Thu, 2010-01-07 at 16:50 +1030, James McLean wrote: On Thu, Jan 7, 2010 at 1:35 PM, Vernon Webb ver...@comp-wiz.com wrote: I move a number of sites from one server to another and one the one server we had php4 and now we have php5 and since then my server seems to hang every time there is a header, location redirect. Anyone have any ideas on how to resolve this? Is there something I can easily change in the php.ini file that will resolve this issue? Off the top of my head it sounds like something is being output before the header, which causes an error. If you also have error display turned off, you will likely just see a white screen with no useful information. Make sure none of your includes have trailing whitespace or are trying to print out information before the header itself. Best bet is to turn on errors and log them, then you will see where the output started if infact that is your issue. Cheers Don't turn on errors if this machine is public, as it could potentially give out more information to people than you want. First, look at the error logs for PHP, which record all the errors you've had with the site, whether you have them displayed or not. Thanks, Ash http://www.ashleysheridan.co.uk http://www.ashleysheridan.co.uk/ http://www.ashleysheridan.co.uk/ Have you checked both the PHP and Apache error logs? Things like invalid commands in an .htaccess file can cause server crashes. Thanks, Ash http://www.ashleysheridan.co.uk http://www.ashleysheridan.co.uk/ They could be in a variety of places depending on how your system is set up. It should show you if you do a phpinfo(); in a page on its own. Thanks, Ash http://www.ashleysheridan.co.uk
Re: [PHP] Call to undefined method on class property!? - [CLOSED]
I caught that error, but the line number was referring to the assignment, it
didn't even get to the obvious error.
Why would $total = $db-affected_rows, (assigning the value of
$affected_rows to $total) be interpreted as a method call?
I have since defined a num_rows() method (using mysql_num_rows()) and I have
gotten past this error, however I am still having a major problem with what
I'm trying to accomplish.
I'll post more later tonight when I get home from work... Thanks for your
help Thijs adn Darren
On Thu, Jan 7, 2010 at 3:49 AM, Thijs Lensselink d...@lenss.nl wrote:
Allen McCabe wrote:
I have a singleton database object in a global file at the top of my
document. In most other locations I am able to access it just fine,
however
in my footer I want to loop through a properties list for links (I am
saving
links to a database, each with its own properties).
Here is the code snippet that is giving me trouble:
footerlinks.inc.php:
?php
$result = $db-query('SELECT * FROM `links` WHERE `category` =
\'footer_navigation\';');
$total = $db-affected_rows;
Here you use affected_rows as a class property to assign a value to a
variable.
if ($total 0)
{
$Link = new Link();
$count = $db-affected_rows($result);
Here you call affected_rows as a class method. And from looking at your
Database class. affected_rows is a property not a method. So that explains
the undefined method error.
$i = 0;
while ($row = $db-fetch_array($result))
{
$properties = $Link-setLinkProperties($row);
$link[$i] = 'a ';
foreach ($properties as $prop)
{
$link[$i] .= $prop;
}
$link[$i] .= '';
$row['text'];
$link[$i] .= '/a';
$i++;
}
$j = 0;
while ($j $link)
{
echo $link[$j];
if ($j $count)
{
echo ' | ';
}
$j++;
}
}
?
The $Link-$Link-setLinkProperties() method is defined in
Link.class.php:
?php
class Link {
public function setLinkProperties($rows)
{
if (!empty($row['href']))
{
$properties['href'] = 'href=' . $row['href'] . ' ';
}
if (!empty($row['class']))
{
$properties['class'] = 'class=' . $row['class'] . ' ';
}
if (!empty($row['style']))
{
$properties['style'] = 'style=' . $row['style'] . ' ';
}
if (!empty($row['title']))
{
$properties['title'] = 'title=' . $row['title'] . ' ';
}
if (!empty($row['name']))
{
$properties['name'] = 'name=' . $row['name'] . ' ';
}
if (!empty($row['target']))
{
$properties['target'] = 'target=' . $row['target'] . ' ';
}
if (!empty($row['rel']))
{
$properties['rel'] = 'rel=' . $row['rel'] . ' ';
}
if (!empty($row['onclick']))
{
$properties['onclick'] = 'onclick=' . $row['onclick'] . ' ';
}
if (!empty($row['ondblclick']))
{
$properties['ondblclick'] = 'ondblclick=' . $row['ondblclick']
. ' ';
}
if (!empty($row['onmouseover']))
{
$properties['onmouseover'] = 'onmouseover=' .
$row['onmouseover'] . ' ';
}
if (!empty($row['onmouseout']))
{
$properties['onmouseout'] = 'onmouseout=' . $row['onmouseout']
. ' ';
}
return $properties;
} // END OF METHOD setLinkProperties
} // END OF CLASS
?
Also for reference, the method query() in my database class sets a value
for
$affected_rows:
Database.class.php:
?php
class Database {
private $server = ''; //database server
private $user = ''; //database login name
private $pass = ''; //database login password
private $database = ''; //database name
private $pre = ''; //table prefix
###
//internal info
private $error = '';
private $errno = 0;
//number of rows affected by SQL query
public $affected_rows = 0;
...
?
This is the error I am receiving:
*Fatal error*: Call to undefined method Database::affected_rows() in *
/home/mwclans1/public_html/components/footerlinks.inc.php* on line *9*
Please help PHP gurus!!
Re: [PHP] Re: First time PHP user question
Ashley Sheridan wrote: On Thu, 2010-01-07 at 08:32 -0500, Rick Dwyer wrote: Thanks Ashley Nathan. As it turns out, there is more than one tmp folder... and I was looking in the wrong one. When I SSH'd in the correct one, I created the missing file and it began to work properly. Thanks for chiming in. --Rick On Jan 7, 2010, at 7:58 AM, Ashley Sheridan wrote: On Thu, 2010-01-07 at 09:19 +, Nathan Rixham wrote: Rick Dwyer wrote: Hello List. I have been playing around with PHP, running a few tutorials and I came across an error message I could not resolve. The tutorial is Generating One Time URL's by Oreilly: http://www.oreillynet.com/pub/a/php/2002/12/05/one_time_URLs.html Basically the PHP code is supposed to read from a text file and write to a text file and serve a text file all located in the tmp directory of the server. However, I receive the error that the referenced files in the PHP code could not be found: Warning: readfile(/tmp/secret_file.txt) [function.readfile]: failed to open stream: No such file or directory in/home/mysite/myfolder/get_file.php on line 67 Line 66 and 67 look like this: $secretfile = /tmp/secret_file.txt; readfile($secretfile); However, in the tmp folder, I have created a simple text file called secret_file.txt so I know it exists and it has the permissions set to 644, so it should be readable. Can someone point out to me what I am doing wrong? Thanks, try permissions of 777 and see if the error disappears; odds are v high that the httpd user php is running under doesn't have group or owner permissions for /tmp that secret file. regards That shouldn't fix it. 644 permissions allow the owner, group users and anybody else to read file. Have you tried is_file(/tmp/ secret_file.txt); to see if it actually exists? Also, don't forget that Linux is case sensitive when it comes to filenames, so secret_file.txt is completely different from Secret_File.txt, and in- fact you can validly have both in the same directory. Thanks, Ash http://www.ashleysheridan.co.uk --Rick There isn't more than one /tmp folder, that is impossible. There was probably more than one tmp folder, and you weren't looking in the right one. Thanks, Ash http://www.ashleysheridan.co.uk Actually, Ash, you can have more then one /tmp folder. Depends on what app is looking at it. If you have PHP running with Apache and Apache is jailed, the the /tmp folder would be from the perspective to the jail the the actual OS. So, if apache was jailed to /var/www/ you could then have a /tmp/ and a /var/www/tmp/ Apache would never see the /tmp/ only the /var/www/tmp/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] cannot access SimpleXML object property
Hi,
I am working with an XML document and have a SimpleXML object whose var_dump
looks like this:
---
object(SimpleXMLElement)#2 (10) {
[@attributes]=
array(1) {
[id]=
string(7) 3854857
}
[type]=
string(7) Article
[createDate]=
string(25) 2006-09-06T16:42:20-07:00
[editDate]=
string(25) 2007-07-16T09:15:53-07:00
[creator]=
string(19) Michael Gottfredson
[status]=
string(5) ready
[field]=
...snip a bunch of stuff...
}
---
Assuming the above object is referenced by $current_object, I can access the
values of most stuff with $current_object-creator or whatever. However, I
cannot figure out how to access the value of id. I tried the following, none
of which worked for me:
1. $current_object-@attributes-id (gives Parse error: syntax error,
unexpected '@', expecting T_STRING or T_VARIABLE or '{' or '$' in
/Applications/apache/htdocs/test.php on line 33)
2. $current_object-'@attributes'-id (gives Parse error: syntax error,
unexpected T_CONSTANT_ENCAPSED_STRING, expecting T_STRING or T_VARIABLE or '{'
or '$' in/Applications/apache/htdocs/test.php on line 33)
3. $current_object-{...@attributes}-id (no error but is null)
4. $current_object-{'@attributes'}-id (no error but is also null)
Does anyone know how I can reference the value of id? Thanks!
Mari
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Re: [PHP] cannot access SimpleXML object property
On Thu, Jan 7, 2010 at 6:56 PM, Mari Masuda mari.mas...@stanford.edu wrote:
Hi,
I am working with an XML document and have a SimpleXML object whose var_dump
looks like this:
---
object(SimpleXMLElement)#2 (10) {
[@attributes]=
array(1) {
[id]=
string(7) 3854857
}
[type]=
string(7) Article
[createDate]=
string(25) 2006-09-06T16:42:20-07:00
[editDate]=
string(25) 2007-07-16T09:15:53-07:00
[creator]=
string(19) Michael Gottfredson
[status]=
string(5) ready
[field]=
...snip a bunch of stuff...
}
---
Assuming the above object is referenced by $current_object, I can access the
values of most stuff with $current_object-creator or whatever. However, I
cannot figure out how to access the value of id. I tried the following, none
of which worked for me:
1. $current_object-@attributes-id (gives Parse error: syntax error,
unexpected '@', expecting T_STRING or T_VARIABLE or '{' or '$' in
/Applications/apache/htdocs/test.php on line 33)
2. $current_object-'@attributes'-id (gives Parse error: syntax error,
unexpected T_CONSTANT_ENCAPSED_STRING, expecting T_STRING or T_VARIABLE or
'{' or '$' in/Applications/apache/htdocs/test.php on line 33)
3. $current_object-{...@attributes}-id (no error but is null)
4. $current_object-{'@attributes'}-id (no error but is also null)
Does anyone know how I can reference the value of id? Thanks!
Mari
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$id = (string)$current_object['id'];
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Re: [PHP] cannot access SimpleXML object property
On Jan 7, 2010, at 2:31 PM, Jonathan Tapicer wrote:
On Thu, Jan 7, 2010 at 6:56 PM, Mari Masuda mari.mas...@stanford.edu wrote:
Hi,
I am working with an XML document and have a SimpleXML object whose var_dump
looks like this:
---
object(SimpleXMLElement)#2 (10) {
[@attributes]=
array(1) {
[id]=
string(7) 3854857
}
[type]=
string(7) Article
[createDate]=
string(25) 2006-09-06T16:42:20-07:00
[editDate]=
string(25) 2007-07-16T09:15:53-07:00
[creator]=
string(19) Michael Gottfredson
[status]=
string(5) ready
[field]=
...snip a bunch of stuff...
}
---
Assuming the above object is referenced by $current_object, I can access the
values of most stuff with $current_object-creator or whatever. However, I
cannot figure out how to access the value of id. I tried the following,
none of which worked for me:
1. $current_object-@attributes-id (gives Parse error: syntax error,
unexpected '@', expecting T_STRING or T_VARIABLE or '{' or '$' in
/Applications/apache/htdocs/test.php on line 33)
2. $current_object-'@attributes'-id (gives Parse error: syntax error,
unexpected T_CONSTANT_ENCAPSED_STRING, expecting T_STRING or T_VARIABLE or
'{' or '$' in/Applications/apache/htdocs/test.php on line 33)
3. $current_object-{...@attributes}-id (no error but is null)
4. $current_object-{'@attributes'}-id (no error but is also null)
Does anyone know how I can reference the value of id? Thanks!
Mari
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$id = (string)$current_object['id'];
Thank you. I also found I could do it with
$current_object-attributes()-id
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Re: [PHP] Re: PHP programming strategy; lots of little include files, or a few big ones?
On Wed, 6 Jan 2010 19:11:07 -0800, dae...@daevid.com (Daevid Vincent) wrote: -Original Message- From: Al [mailto:n...@ridersite.org] Sent: Wednesday, January 06, 2010 5:09 PM To: php-general@lists.php.net Subject: [PHP] Re: PHP programming strategy; lots of little include files, or a few big ones? On 1/6/2010 7:18 PM, clanc...@cybec.com.au wrote: I have a flexible program, which can do many different things according to the type of data it is fed. Ideally the flexibility is achieved by calling different functions, though when the functionality is ill-defined I sometimes just include blocks of code. Ideally, from the point of program maintenance, each module should not be too long -- preferably just a page or so. This doesn't raise problems in a compiled language, but in an interpreted language like PHP the programmer must decide whether to lump a whole lot of functions into a single large include file, or to include lots of little files as the particular functions are needed. The first case can lead to memory bloat, as there are likely to be a lot of unused functions in memory on any given pass, whereas the second case may require lots of little files to be loaded. Are there likely to be significant performance costs for either approach, and what are your feelings about the relative virtues of the two approaches? I think it's a case by case basis. Generally File I/O is expensive, but then again, as you say, having everything in a couple files is also sub-optimal for organizing and keeping things modular. I suggest you go with smaller files that are organized into logical 'chunks'. For example, functions that are used frequently are grouped into a common.inc.php rather than by topic (such as file/date/xml/forms/etc). And then use topical includes for the rest. More importantly, I suggest you get a good caching system like memecached or any of the others out there. Then you can pre-compile and load these files and the whole point becomes close to moot. ÐÆ5ÏÐ http://daevid.com Thank you all for your comments. I did not know about bytecode caches. They're an interesting concept, but if I am interpreting the paper http://itst.net/654-php-on-fire-three-opcode-caches-compared correctly they only double the average speed of operation, which is rather less than I would have anticipated. As I would have to understand yet another system to implement them, and I suspect I'd have to do a significant amount of rearranging, I don't think I will worry about them unless my webpages unexpectedly become extremely popular. Al's suggestion that my code is probably infinitesimal compared with PHP suggests that I shouldn't be worrying about memory requirements. On the other hand I agree with David that the advantages of using relatively small easy to understand modules probably outweigh the costs of loading a larger number of files. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: PHP programming strategy; lots of little include files, or a few big ones?
On Wed, 06 Jan 2010 23:20:26 -0500, kolb0...@umn.edu (Daniel Kolbo) wrote:
Daevid Vincent wrote:
-Original Message-
From: Al [mailto:n...@ridersite.org]
Sent: Wednesday, January 06, 2010 5:09 PM
To: php-general@lists.php.net
Subject: [PHP] Re: PHP programming strategy; lots of little
include files, or a few big ones?
On 1/6/2010 7:18 PM, clanc...@cybec.com.au wrote:
I have a flexible program, which can do many different
things according to the type of
data it is fed. Ideally the flexibility is achieved by
calling different functions,
though when the functionality is ill-defined I sometimes
just include blocks of code.
Ideally, from the point of program maintenance, each module
should not be too long --
preferably just a page or so. This doesn't raise problems
in a compiled language, but in
an interpreted language like PHP the programmer must decide
whether to lump a whole lot of
functions into a single large include file, or to include
lots of little files as the
particular functions are needed.
The first case can lead to memory bloat, as there are
likely to be a lot of unused
functions in memory on any given pass, whereas the second
case may require lots of little
files to be loaded.
Are there likely to be significant performance costs for
either approach, and what are
your feelings about the relative virtues of the two approaches?
I think it's a case by case basis. Generally File I/O is expensive, but
then again, as you say, having everything in a couple files is also
sub-optimal for organizing and keeping things modular.
I suggest you go with smaller files that are organized into logical
'chunks'. For example, functions that are used frequently are grouped into
a common.inc.php rather than by topic (such as file/date/xml/forms/etc).
And then use topical includes for the rest.
More importantly, I suggest you get a good caching system like memecached
or any of the others out there. Then you can pre-compile and load these
files and the whole point becomes close to moot.
ÐÆ5ÏÐ
http://daevid.com
Some people, when confronted with a problem, think 'I know, I'll use
XML.'
Now they have two problems.
I had a similar issue but with classes (not functions).
I opted to keep my classes short and succinct, rather than shoving all
the method functionality into one all-purpose class.
Instead of blindly loading all the little classes on each http request,
I used (and was recommended on this list to use) __autoload(). The
script would only load my classes if the individual request needed it.
This helped to avoid the memory bloat. I've heard magic functions like
__autoload are a bit slower, but the code is so much cleaner b/c of it.
Also, an opcode cache as suggested previously would facilitate the rapid
include of many small files.
Unfortunately, php does not offer an __autoload() type function to
autoload functions.
If you are able to encapsulate your functions functionality into classes
you may be able to use the above solution of using an opcode cache to
help __autoload() a bunch of small classes.
Although PHP doesn't offer an _autoload() function to autoload functions, it
does provide
function_exists, and this can readily be used to achieve the same end:
If (!function_exists(feedback_handler)) { include
('Feedback_handler.php'); }
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RE: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working
It's the oddest thing. I've found the logs but there is no error at all, the server just hangs and the only way to get it back is to restart Apache. From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: Thu 1/7/2010 9:04 AM To: Vernon Webb Cc: php-general@lists.php.net Subject: RE: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working On Thu, 2010-01-07 at 08:57 -0500, Vernon Webb wrote: Didn't know there were php logs, I thought they would be included in the Apache logs, where do I find the php logs? ~V From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: Thu 1/7/2010 8:42 AM To: Vernon Webb Cc: php-general@lists.php.net Subject: RE: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working On Thu, 2010-01-07 at 08:40 -0500, Vernon Webb wrote: That's the odd thing, there is nothing being indicated in the error logs the server just hangs and I have to restart apache in order to get the site back up. First I thought it might be the server so I move over to a different server, but I still have the same issue. What I feel is really odd is the fact that it worked in a previous version of php, so waht's changed? ~V From: Ashley Sheridan [mailto:a...@ashleysheridan.co.uk] Sent: Thu 1/7/2010 7:52 AM To: James McLean Cc: Vernon Webb; php-general@lists.php.net Subject: Re: [PHP] Site Moved From PHP4 to PHP5 Server - header, location no longer working On Thu, 2010-01-07 at 16:50 +1030, James McLean wrote: On Thu, Jan 7, 2010 at 1:35 PM, Vernon Webb ver...@comp-wiz.com wrote: I move a number of sites from one server to another and one the one server we had php4 and now we have php5 and since then my server seems to hang every time there is a header, location redirect. Anyone have any ideas on how to resolve this? Is there something I can easily change in the php.ini file that will resolve this issue? Off the top of my head it sounds like something is being output before the header, which causes an error. If you also have error display turned off, you will likely just see a white screen with no useful information. Make sure none of your includes have trailing whitespace or are trying to print out information before the header itself. Best bet is to turn on errors and log them, then you will see where the output started if infact that is your issue. Cheers Don't turn on errors if this machine is public, as it could potentially give out more information to people than you want. First, look at the error logs for PHP, which record all the errors you've had with the site, whether you have them displayed or not. Thanks, Ash http://www.ashleysheridan.co.uk http://www.ashleysheridan.co.uk/ http://www.ashleysheridan.co.uk/ http://www.ashleysheridan.co.uk/ Have you checked both the PHP and Apache error logs? Things like invalid commands in an .htaccess file can cause server crashes. Thanks, Ash http://www.ashleysheridan.co.uk http://www.ashleysheridan.co.uk/ http://www.ashleysheridan.co.uk/ They could be in a variety of places depending on how your system is set up. It should show you if you do a phpinfo(); in a page on its own. Thanks, Ash http://www.ashleysheridan.co.uk http://www.ashleysheridan.co.uk/ -- This message has been scanned for viruses and dangerous content by comp-wiz.com http://comp-wiz.com/ , and is believed to be clean.
Re: [PHP] Re: PHP programming strategy; lots of little include files, or a few big ones?
clanc...@cybec.com.au wrote: Thank you all for your comments. I did not know about bytecode caches. They're an interesting concept, but if I am interpreting the paper http://itst.net/654-php-on-fire-three-opcode-caches-compared correctly they only double the average speed of operation, which is rather less than I would have anticipated. I strongly advise that you take the time to try a bytecode cache. Within linux environments I am partial to eaccelerator. In IIS environments I now use WinCache from Microsoft. From my own observations with a multitude of different types of PHP web applications I find that the speed gain is closer to 5 times faster on average. As I would have to understand yet another system to implement them, and I suspect I'd have to do a significant amount of rearranging, I don't think I will worry about them unless my webpages unexpectedly become extremely popular. That's your perogative, but you started this thread with a question about file access times. By your latest argument (above) you may as well ignore it since when and if the issue becomes salient then you can worry about it. However, I think that's disingenuous at best since your pages will appear slower on average, and you're just wasting CPU resources. Al's suggestion that my code is probably infinitesimal compared with PHP suggests that I shouldn't be worrying about memory requirements. On the other hand I agree with David that the advantages of using relatively small easy to understand modules probably outweigh the costs of loading a larger number of files. You've missed several points. Bytecode caches allow you to skip the trip to the filesystem. They allow you to skip the parse and compile stage of PHP. They almost always make your shit run faster. Cheers, Rob. -- http://www.interjinn.com Application and Templating Framework for PHP -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: PHP programming strategy; lots of little include files, or a few big ones?
On Thu, 07 Jan 2010 22:48:59 -0500, rob...@interjinn.com (Robert Cummings) wrote: clanc...@cybec.com.au wrote: Thank you all for your comments. I did not know about bytecode caches. They're an interesting concept, but if I am interpreting the paper http://itst.net/654-php-on-fire-three-opcode-caches-compared correctly they only double the average speed of operation, which is rather less than I would have anticipated. I strongly advise that you take the time to try a bytecode cache. Within linux environments I am partial to eaccelerator. In IIS environments I now use WinCache from Microsoft. From my own observations with a multitude of different types of PHP web applications I find that the speed gain is closer to 5 times faster on average. Five times faster is certainly more attractive than twice as fast. But under what circumstances is this achieved? Unfortunately these days it is difficult to find any solid information on how things actually work, but my impression is that caches only work for pages which are frequently accessed. If this is correct, and (as I suspect) somebody looks at my website once an hour, the page will not be in the cache, so it won't help. Also one of the more popular parts of this website is my photo album, and for this much of the access time will be the download time of the photos. Furthermore as each visitor will look at a different set of photos, even with heavy access it is unlikely that any given photo would be in a cache. Despite these comments the access times for my websites seem to be pretty good -- certainly a lot better than many commercial websites -- but have a look at http://www.corybas.com/, and see what you think. (I am in the process of updating this, and know that the technical notes are not currently working, but there is plenty there to show you what I'm trying to do.) As I would have to understand yet another system to implement them, and I suspect I'd have to do a significant amount of rearranging, I don't think I will worry about them unless my webpages unexpectedly become extremely popular. That's your perogative, but you started this thread with a question about file access times. By your latest argument (above) you may as well ignore it since when and if the issue becomes salient then you can worry about it. However, I think that's disingenuous at best since your pages will appear slower on average, and you're just wasting CPU resources. Unfortunately I am cursed with an insatiable curiosity, and spend far too much time thinking about philosophical questions like this. But I have also been programming almost forever, and I have learned that it would now take me five times as long as (I hope) it would take you to implement something new like byte code caching. Al's suggestion that my code is probably infinitesimal compared with PHP suggests that I shouldn't be worrying about memory requirements. On the other hand I agree with David that the advantages of using relatively small easy to understand modules probably outweigh the costs of loading a larger number of files. You've missed several points. Bytecode caches allow you to skip the trip to the filesystem. They allow you to skip the parse and compile stage of PHP. They almost always make your shit run faster. Perhaps. But my visitors appear to be happy now, and my hosts aren't complaining that I'm overloading their system. Clancy PS. It does sadden me that there don't seem to be many people here who are interested in the philosophy of programming, as against the quick and dirty fix. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
