ini_restore

(PHP 4, PHP 5, PHP 7)

ini_restore — Restores the value of a configuration option

Description

void ini_restore ( string $varname )

Restores a given configuration option to its original value.

Parameters

varname: The configuration option name.

Return Values

No value is returned.

Examples

Example #1 ini_restore() example


<?php
$setting = 'y2k_compliance';

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

ini_set($setting, ini_get($setting) ? 0 : 1);
echo 'New value for \'' . $setting . '\': ' . ini_get($setting), PHP_EOL;

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

The above example will output:

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

User Contributed Notes

Anonymous

3 months 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;
}

?>