(PECL sync >= 1.0.0)
Waits for an exclusive lock
public bool SyncMutex::lock ([ integer $wait ] )
Obtains an exclusive lock on a SyncMutex object. If the lock is already acquired, then this increments an internal counter.
Parameters:
wait
The number of milliseconds to wait for the exclusive lock. A value of -1 is infinite.
Returns:
A boolean of TRUE if the lock was obtained, FALSE otherwise.
Examples:
SyncMutex::lock() example
<?php
$mutex = new SyncMutex("UniqueName");
if (!$mutex->lock(3000))
{
echo "Unable to lock mutex.";
exit();
}
/* ... */
$mutex->unlock();
?>
See also:
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