SyncSemaphore::unlock

(PECL sync >= 1.0.0)

SyncSemaphore::unlock — Increases the count of the semaphore

说明

public bool SyncSemaphore::unlock ([ integer &$prevcount ] )

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 ();
 ?>

以上例程的输出类似于：

...

参见

SyncSemaphore::lock() - Decreases the count of the semaphore or waits