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.]
get_cfg_var
(PHP 4, PHP 5, PHP 7, PHP 8)
get_cfg_var — Restituisce il valore di un'opzione di configurazione del PHP
Descrizione
Restituisce il valore corrente della variabile di configurazione
indicata da varname, oppure false se
si verifica un errore.
La funzione non restituisce informazioni di configurazione nel caso in cui il PHP è compilato, o caricato da un file di configurazione di Apache (tramite le direttive php3_configuration_option).
Per verificare se il sistema utilizza un file di configurazione, tentare di ricavare il valore di cfg_file_path. Se è disponibile significa che si utilizza un file di configurazione.
Vedere anche ini_get().
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User Contributed Notes 6 notes
surfchen at gmail dot com ¶
18 years ago
gabriel b ¶
11 years ago
settings with the value of 'yes' will be returned as '1'.
<?php
//#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.
sinus at sinpi dot net ¶
4 years ago
Boolean-like values are evaluated as follows: "true", "on", "yes" evaluate to "1" (string 1), while "false", "off", "no" evaluate to "" (empty string).
tbrix13 at uzitech dot com ¶
10 years ago
keep in mind get_cfg_var() returns a string(1) '1' for the value: On
<?php
//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 ¶
10 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
Stephen ¶
17 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:
<?php
error_reporting(8183);
?>
and this at the bottom:
<?php
error_reporting(get_cfg_var('error_reporting'));
?>
to put it back to whatever default I had at the time.
