(PHP 3 >= 3.0.6, PHP 4, PHP 5)
sem_release -- Release a semaphore
Description
bool 
sem_release ( resource sem_identifier )
     sem_release() releases the semaphore if it
     is currently acquired by the calling process, otherwise
     a warning is generated.
    
     Returns TRUE on success or FALSE on failure.
    
      After releasing the semaphore, sem_acquire()
      may be called to re-acquire it.
    
 
     See also
     sem_get() and
     sem_acquire().