(PHP 5 >= 5.2.0, PHP 7) Returns the peak of memory allocated by PHP

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Returns an associative array with the names of all the constants and their

(PHP 4, PHP 5) Sets the current active configuration setting of magic_quotes_runtime

(PHP 4, PHP < 5.5) Gets the Zend guid string

(PHP 4, PHP 5, PHP 7) Gets time of last page modification

(PHP 7) Returns active resources array get_resources

(PHP 7) Reclaims memory used by the Zend Engine memory manager

(PHP 4, PHP 5, PHP 7) Gets PHP's process ID int

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Returns the amount of memory allocated to PHP

(PHP 4, PHP 5, PHP 7) Gets the value of a PHP configuration option