ini_set

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RebootConcepts.com
01-Apr-2006 05:36


set PHP_INI_PERDIR settings in a .htaccess file with 'php_flag' like this:



php_flag register_globals off

php_flag magic_quotes_gpc on

Ron Ludwig
11-Jan-2006 03:30


When your ISP does not allow you to add the default include directories - it might be useful to extend the 'include_path' variable:



<?  ini_set('include_path',ini_get('include_path').':../includes:');  ?>

David Jackson
20-Sep-2005 07:40


You can also find the Apache config files by useing command httpd -V

brainiac5 dot php at aimail dot de
05-Sep-2004 10:54


To find the apache php settings try something like this.

> cd /etc/apache2

> grep -r -n -i  safe_mode_exec_dir *.conf

or

> grep -r -n -i safe_mode.*On *.conf



If you find a gererated file, obviously you need to find the source template for it, to change what's needed there.



I just wasted a sunny Sunday on searching for where the heck safe_mode_exec_dir was changed.



And yes, Local Value in phpinfo does mean 'changed between the php.ini file and here', as you would think.



If you have an automated virtual host configuration, such as confixx, php ini values can be spread across very many files.



They can be changed in apache config files, that can have any name, but usually will end on .conf, besides in .htaccess files.

klw at gmx dot at
05-Sep-2004 09:49


To change settings from .htaccess files, it is also required that the directory permissions configured in Apache allow this.



The <Directory /foo/bar> entry in httpd.conf MUST contain "AllowOverride All" or at least "AllowOverride Options" to read PHP settings from the .htaccess file.



E.g. in Fedora Core 2, the default settings for /var/www/html/ are "AllowOverride None", so changing PHP settings via .htaccess for applications installed below /var/www/html/ will not work.

sean at php dot net
14-Aug-2004 09:54


While this doesn't belong in the manual, it should be useful for people looking on this page for zend_optimizer.* ini options, which are commonly installed:





Information on the "zend_optimizer.optimization_level" and "zend_optimizer.enable_loader" options is available at:





http://www.zend.com/support/user_docs/ZendOptimizer/PDF/ZendOptimizer_UserGuide.pdf

vincent(at)tigroux(dot)net
30-Apr-2004 09:20


Where you want set ini in .htaccess or vhosts directives, if the value of directive is boolean , use php_flag, else if the value is a string use php_value.



Ex : php_value include_path /home/user/include

php_flag zlib.output_compression On

davey at its-explosive dot net
18-Mar-2003 10:42


If you set something using php_admin_value in httpd.conf it is then not possible to be set the value at runtime, even if it's NOT PHP_INI_SYSTEM. 



Just an interesting note for Server admins this might come in handy to disable setting of certain things... like allow_url_fopen.



- Davey

miroslav AT simunic DOT de
30-Sep-2002 11:26


If its not your server and therefore you want to hide the data in your session variables from other users, its very useful to set the session.save_handler in your scripts to shared memory with:



"ini_set('session.save_handler','mm')". 



Remember: You have to set it in every script that uses the session variables BEFORE "session_start()" or php wont find them.

Tr909 at com dot nospam dot bigfoot
13-Jun-2002 01:04


[[[Editors note: Yes, this is very true.  Same with 


register_globals, magic_quotes_gpc and others.


]]]





Many settings, although they do get set, have no influence in your script.... like upload_max_filesize will get set but uploaded files are already passed to your PHP script before the settings are changed.





Also other settings, set by ini_set(), may be to late because of this (post_max_size etc.).


beware, try settings thru php.ini or .htaccess.

johnzoet at netscape dot com
14-Mar-2002 10:13


[[[Editors note: Just because you're able to set something 


doesn't mean it will work as expected.  Depends on the 


setting.  For example. setting register_globals at 


runtime will be of little use as its job has already 


been completed by the time it reaches your script.


]]]





When a setting can not be changed in a user script, the return value of ini_set is "empty", not "false" as you may expect.


If you check in your script for return value is "false" the script will continue processing, although the setting has not been set.


The boolean return value is used for settings that can be changed in a script. Otherwise the empty value is returned.


To test for both error conditions use:


if (empty($blnResult) or (!$blnResult)) {


   echo "setting cannot be set";


   exit;


}

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ini_set

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