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(PECL sync >= 1.0.0)
SyncMutex::__construct — Constructs a new SyncMutex object
$name
] )Constructs a named or unnamed countable mutex.
name
The name of the mutex if this is a named mutex object.
Note:
If the name already exists, it must be able to be opened by the current user that the process is running as or an exception will be thrown with a meaningless error message.
The new SyncMutex object. An exception is thrown if the mutex cannot be created or opened.
Example #1 SyncMutex::__construct() named mutex with lock timeout example
<?php
$mutex = new SyncMutex ( "UniqueName" );
if (! $mutex -> lock ( 3000 ))
{
echo "Unable to lock mutex." ;
exit();
}
$mutex -> unlock ();
?>
Example #2 SyncMutex::__construct() unnamed mutex example
<?php
$mutex = new SyncMutex ();
$mutex -> lock ();
$mutex -> unlock ();
?>