ini_restore
Be careful with setting an output_handler, as you can't use ini_set() to change it. *sigh*
In my php.ini I have this for my web pages (and I want it):
output_handler = ob_gzhandler
But this causes my command line scripts to not show output until the very end.
#!/usr/bin/php -q
<?php
ini_set('output_handler', 'mb_output_handler');
echo "\noutput_handler => " . ini_get('output_handler') . "\n";
?>
root@# ./myscript.php
output_handler => ob_gzhandler
Apparently (acording to Richard Lynch):
> TOO LATE!
> The ob_start() has already kicked in by this point.
> ob_flush() until there are no more buffers.
ini_set
(PHP 4, PHP 5)
ini_set — Establece el valor de una opción de configuración
Descripción
string ini_set
( string $nombre_var
, string $nuevo_valor
)
Establece el valor de la opción de configuración dada. La opción de configuración mantendrá este nuevo valor durante la ejecución del script, y será restablecido al final del script.
Lista de parámetros
- nombre_var
-
No todas las opciones disponibles pueden ser modificadas usando ini_set(). Hay una lista de todas las opciones disponibles en el apéndice.
- nuevo_valor
-
El nuevo valor para la opción.
Valores retornados
Devuelve el valor antiguo en caso de éxito, FALSE en caso de fallo.
add a note
User Contributed Notesini_set
daevid at daevid dot com
31-Oct-2006 01:19
31-Oct-2006 01:19
RebootConcepts.com
31-Mar-2006 09:36
31-Mar-2006 09:36
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
10-Jan-2006 07:30
10-Jan-2006 07:30
When your ISP does not allow you to add the default include directories - it might be useful to extend the 'include_path' variable:
<?php ini_set('include_path',ini_get('include_path').':../includes:'); ?>
brainiac5 dot php at aimail dot de
05-Sep-2004 02:54
05-Sep-2004 02:54
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 01:49
05-Sep-2004 01:49
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 01:54
14-Aug-2004 01:54
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
davey at its-explosive dot net
18-Mar-2003 02:42
18-Mar-2003 02:42
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 03:26
30-Sep-2002 03:26
If it's not your server and therefore you want to hide the data in your session variables from other users, it�s very useful to set the session.save_handler in your scripts to shared memory with:
<?php 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 won't find them.
Tr909 at com dot nospam dot bigfoot
12-Jun-2002 05:04
12-Jun-2002 05:04
[[[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 02:13
14-Mar-2002 02:13
[[[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:
<?php
if (empty($blnResult) or (!$blnResult)) {
echo "setting cannot be set";
exit;
}
?>