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Last updated: Fri, 26 Jan 2007

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# get_cfg_var

(PHP 3, PHP 4, PHP 5)

get_cfg_var -- Gets the value of a PHP configuration option

## Description

string get_cfg_var ( string varname )

Returns the current value of the PHP configuration variable specified by `varname`, or `FALSE` if an error occurs.

It will not return configuration information set when the PHP was compiled, or read from an Apache configuration file (using the php3_configuration_option directives).

To check whether the system is using a configuration file, try retrieving the value of the cfg_file_path configuration setting. If this is available, a configuration file is being used.

See also ini_get().

add a note User Contributed Notes
get_cfg_var
Stephen
10-Jan-2007 11:21
`Regarding the statement by the earlier poster that:
"Unfortunately, you almost never want to know the original value in the config file. Instead, you want to know the value currently in effect."
I have found this useful for changing the error reporting levels for a few specific pages while testing. I turn on all error_reporting while testing, but for a few pages I want to turn off notices. So, I put this at the top of the page:
error_reporting(8183);
and this at the bottom:
error_reporting(get_cfg_var('error_reporting'));
to put it back to whatever default I had at the time.`
surfchen at gmail dot com
04-Sep-2006 07:00
`get_cfg_var returns the value from php.ini directly,while the ini_get returns the runtime config value. I have tried it on PHP 5.1.6`
digitalife at 163 dot com
18-Jan-2003 01:51
`ini_get() return the current value of the configuration option.
But the get_cfg_var() always get the value from config file, php.ini.
------------------------------------------------------
In PHP4.3.0，I test this in WindowXP，I found the Get_Cfg_Var() and ini_get() is same return the current value of the configuration,not from config file php.ini NOW!!!`
verdana at php dot net
04-Dec-2002 10:16
`ini_get() return the current value of the configuration option.
But the get_cfg_var() always get the value from config file, php.ini.
This is the test code:
ini_set('sendmail_from', 'verdana@263.net');
echo '<br /> <br />';
echo '<br /> Current Value:';
var_dump(ini_get('sendmail_from'));
echo '<br /> Value in cfg file:';
var_dump(get_cfg_var('sendmail_from'));`
matt at ibforums dot com
28-May-2002 04:43
`If you are using PHP 4.0+ (and if not, why not!) use ini_get().
This will return the local value - even if you've set it via apache in http.conf as I did during testing.`
eric dot kidd at pobox dot com
11-Aug-2000 03:13
`As implemented, this function is an odd wart--it calls cfg_get_string, which returns the value originally set in the config file, if any.
Unfortunately, you almost never want to know the original value in the config file. Instead, you want to know the value currently in effect. (These two values can be different if you have no php.ini file, or if you're setting options in httpd.conf or .htaccess files.)
To get the current value of a configuration option you should use ini_get() instead`
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get_current_user extension_loaded

Last updated: Fri, 26 Jan 2007
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