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get_cfg_varErmittelt den Wert einer Konfigurationsoption


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 oder über Apache-Konfigurationsdateien gesetzt wurden.

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



Der Name der Konfigurationsvariable.


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


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

Siehe auch

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User Contributed Notes 5 notes

surfchen at gmail dot com
10 years ago
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

[EDIT by danbrown AT php DOT net: The author of this note means that ini_get() will return values set by ini_set(), .htaccess, a local php.ini file, and other functions at runtime.  Conversely, get_cfg_var() will return strictly the server php.ini.]
gabriel b
3 years ago
settings with the value of 'yes' will be returned as '1'.

//#my ini file
//A = 1
//B = any-thing
//C = yes
//D = /some/path/file

get_cfg_var('A') // returns '1'
get_cfg_var('B') // returns 'any-thing'
get_cfg_var('C') // returns '1', wait, why?
get_cfg_var('D') // returns '/some/path/file'

I had my setting = yes and then checked it as ==="yes" for epic fail.
tbrix13 at uzitech dot com
2 years ago
keep in mind get_cfg_var() returns a string(1) '1' for the value: On

//in php.ini
//A = On

$A1 = get_cfg_var("A") === "On";
$A2 = get_cfg_var("A") === 1;
$A3 = get_cfg_var("A") === "1";

//$A1 is false
//$A2 is false
//$A3 is true
techno dot rahul1988 at gmail dot com
2 years ago
The difference between ini_get() and get_cfg_var() is as follows:
@) ini_get(): returns the current value in .htaccess or as defined in PHP_INI_USER or PHP_INI_PERDIR
@) get_cfg_var: returns the values defined in the php.ini
10 years ago
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:


and this at the bottom:


to put it back to whatever default I had at the time.
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