Release a semaphore sem_get sem_remove Semaphore Functions PHP Manual sem_release (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. After releasing the semaphore, sem_acquire() may be called to re-acquire it. Parameters sem_identifier A Semaphore resource handle as returned by sem_get(). Return Values Returns TRUE on success or FALSE on failure. See Also sem_get() sem_acquire() sem_get sem_remove Semaphore Functions PHP Manual
