SyncSemaphore::unlock
(PECL sync >= 1.0.0)
SyncSemaphore::unlock — Increases the count of the semaphore
说明
public
SyncSemaphore::unlock ([
int
&$prevcount ] ) :
bool
Increases the count of a SyncSemaphore object.
参数
-
prevcount -
Returns the previous count of the semaphore.
返回值
A boolean of TRUE if the unlock operation was successful, FALSE otherwise.
范例
Example #1 SyncSemaphore::unlock() example
<?php
$semaphore = new SyncSemaphore("LimitedResource_2clients", 2);
if (!$semaphore->lock(3000))
{
echo "Unable to lock semaphore.";
exit();
}
/* ... */
$semaphore->unlock();
?>
参见
- SyncSemaphore::lock() - Decreases the count of the semaphore or waits
