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)
get_cfg_var — PHP 설정 옵션의 값 얻기
설명
string get_cfg_var
( string
$option
)
PHP 설정 option 값을 얻습니다.
이 함수는 PHP 컴파일시에 설정했거나, 아파치 설정 파일에서 읽는 정보는 반환하지 않습니다.
시스템이 어떤 설정 파일를 사용하는지 확인하려면, cfg_file_path 설정값을 확인해보십시오. 존재한다면, 그 설정 파일을 사용합니다.
인수
-
option -
설정 옵션 이름.
반환값
option으로 지정한 PHP 설정 변수의 현재 값을
반환하거나, 오류가 발생하면 FALSE를 반환합니다.
변경점
| 버전 | 설명 |
|---|---|
| 5.3.0 | get_cfg_var()가 "array" ini 옵션을 반환할 수 있도록 수정되었습니다. |
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User Contributed Notes 6 notes
surfchen at gmail dot com ¶
17 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.
tbrix13 at uzitech dot com ¶
9 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 ¶
9 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
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).
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.
