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Last updated: Sat, 07 Jan 2012

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get_cfg_var

(PHP 4, PHP 5)

get_cfg_var — Ermittelt den Wert einer Konfigurationsoption

Beschreibung

string get_cfg_var ( string $option )

Ermittelt den aktuellen Wert der Konfigurationsoption option.

Diese Funktion gibt keine Konfigurationsinformationen zurück die bereits bei der Kompilation von PHP ode über Apache-Konfigurationsdateien gesetzt wurden.

Um zu prüfen ob das System eineKonfigurationsdateibenutzt können Sie versuchen den Wert der cfg_file_path Einstellung abzufragen. Wenn dieser verfügbar ist wird eine Konfigurationsdatei genutzt.

Parameter-Liste

option

Der Name der Konfigurationsvariable.

Rückgabewerte

Gibt den aktuellen Wert der mit option angegebenen Konfigurationsvariable zurück. Tritt ein Fehler auf so wird FALSE zurückgegeben.

Changelog

Version Beschreibung
5.3.0 get_cfg_var() kann nun auch "array" Konfigurationsvariablen zurückgeben.

Siehe auch



add a note add a note User Contributed Notes
get_cfg_var
Stephen
10-Jan-2007 08:21
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 04:00
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 10:51
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
05-Dec-2002 07:16
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
29-May-2002 01:43
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
12-Aug-2000 12:13
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> <gc_enabled
Last updated: Sat, 07 Jan 2012