(PECL pthreads >= 2.0.0)
Mutex::trylock — Attempt to Acquire Mutex
$mutex
)Attempt to lock the Mutex for the caller without blocking if the Mutex is owned (locked) by another Thread.
mutexA handle returned by a previous call to Mutex::create().
A boolean indication of success.
Example #1 Mutex Locking and Unlocking
<?php
/** You cannot use the "new" keyword, a Mutex is not a PHP object **/
$mutex = Mutex::create();
/** You can now try to lock the mutex in any context **/
var_dump(Mutex::trylock($mutex));
/** It is invalid to attempt to destroy a locked Mutex **/
var_dump(Mutex::unlock($mutex));
/** Always destroy mutex you have created **/
Mutex::destroy($mutex);
?>
The above example will output:
bool(true) bool(true)