Mutex::lock
Mutex::lock
(PECL pthreads < 3.0.0)
Mutex::lock — Acquire Mutex
Warning
The Mutex class has been removed in pthreads v3.
Description
final public static boolean Mutex::lock ( long $mutex )
Attempt to lock the Mutex for the caller.
An attempt to lock a Mutex owned (locked) by another Thread will result in blocking.
Parameters
-
mutex
-
A handle returned by a previous call to Mutex::create().
Return Values
A boolean indication of success.
Examples
Example #1 Mutex Locking and Unlocking
<?php /** You cannot use the "new" keyword, a Mutex is not a PHP object **/ $mutex = Mutex::create(); /** You can now lock the mutex in any context **/ var_dump(Mutex::lock($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)
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https://secure.php.net/manual/en/mutex.lock.php