PHP 5.6.18 is available

ini_restore

(PHP 4, PHP 5, PHP 7)

ini_restore恢复配置选项的值

说明

void ini_restore ( string $varname )

恢复指定的配置选项到它的原始值。

参数

varname

配置选项名称。

返回值

没有返回值。

范例

Example #1 ini_restore() 例子

<?php
$setting 
'y2k_compliance';

echo 
'Current value for \'' $setting '\': ' ini_get($setting), PHP_EOL;

ini_set($settingini_get($setting) ? 1);
echo 
'New value for \'' $setting '\': ' ini_get($setting), PHP_EOL;

ini_restore($setting);
echo 
'Original value for \'' $setting '\': ' ini_get($setting), PHP_EOL;
?>

以上例程会输出:

Current value for 'y2k_compliance': 1
New value for 'y2k_compliance': 0
Original value for 'y2k_compliance': 1

参见

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User Contributed Notes 1 note

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Anonymous
30 days ago
If like me you thought ini_restore() would restore to the most recent setting rather than the startup value, you could use this.

<?php

/**
* Executes a function using a custom PHP configuration.
*
* @param array $settings A map<ini setting name, ini setting value>.
* @param callable $doThis The code to execute using the given settings.
* @return mixed Returns the value returned by the given callable.
*/
function ini_using_do(array $settings, callable $doThis){
    foreach(
$settings as $name => $value){
       
$previousSettings[$name] = ini_set($name, $value);
    }
   
$returnValue = $doThis();
    if(isset(
$previousSettings)){
        foreach(
$previousSettings as $name => $value){
           
ini_set($name, $value);
        }
    }
    return
$returnValue;
}

?>
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