(PECL pthreads < 3.0.0)
Mutex::lock — Acquire Mutex
The Mutex class has been removed in pthreads v3.
Attempt to lock the Mutex for the caller.
An attempt to lock a Mutex owned (locked) by another Thread will result in blocking.
A handle returned by a previous call to Mutex::create().
A boolean indication of success.
Exemplo #1 Mutex Locking and Unlocking
/** 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 **/
/** It is invalid to attempt to destroy a locked Mutex **/
/** Always destroy mutex you have created **/
O exemplo acima irá imprimir: