php man page for ini_restore

INI_RESTORE(3)								 1							    INI_RESTORE(3)

ini_restore - Restores the value of a configuration option

SYNOPSIS
       void ini_restore (string  $varname)

DESCRIPTION
	Restores a given configuration option to its original value.

PARAMETERS
	      o $varname
		- The configuration option name.

RETURN VALUES
	No value is returned.

EXAMPLES
       Example #1

	      ini_restore(3) 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

SEE ALSO
       ini_get(3), ini_get_all(3), ini_set(3).

PHP Documentation Group 													    INI_RESTORE(3)