(PECL apd >= 0.2) Stops the interpreter and waits on a CR from the socket

(PECL apcu >= 5.0.0) Checks if current position is valid

(PECL xhprof >= 0.9.0) Stops xhprof profiler

(PHP 4, PHP 5, PHP 7) Alias of

(PECL xhprof >= 0.9.0) Stops xhprof sample profiler

(PHP 4, PHP 5, PHP 7) Gets the current active configuration setting of magic_quotes_runtime

(PECL apcu >= 4.0.0) Increase a stored number

(PECL weakref >= 0.1.0) Returns the object pointed to by the weak reference

(PHP 4, PHP 5, PHP 7) Send an error message to the defined error handling routines

(PHP 5 >= 5.5.5, PHP 7, PECL ZendOpcache > 7.0.2) Compiles and caches a PHP script without executing it