Php/docs/syncsemaphore.lock
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SyncSemaphore::lock
(PECL sync >= 1.0.0)
SyncSemaphore::lock — Decreases the count of the semaphore or waits
Description
public SyncSemaphore::lock
([ int $wait = -1
] ) : bool
Decreases the count of a SyncSemaphore object or waits until the semaphore becomes non-zero.
Parameters
wait- The number of milliseconds to wait for the semaphore. A value of -1 is infinite.
Return Values
A boolean of TRUE if the lock operation was successful, FALSE otherwise.
Examples
Example #1 SyncSemaphore::lock() example
<?php$semaphore = new SyncSemaphore("LimitedResource_2clients", 2);if (!$semaphore->lock(3000)){ echo "Unable to lock semaphore."; exit();}/* ... */$semaphore->unlock();?>
