(PHP 4, PHP 5, PHP 7)
ini_restore — Restores the value of a configuration option
ini_restore ( string $varname ) : void
Restores a given configuration option to its original value.
varname
The configuration option name.
No value is returned.
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
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https://www.php.net/manual/en/function.ini-restore.php