sem_releasePHP ManualPrevNextsem_releasesem_release -- release a semaphoreDescriptionint sem_release(int sem_identifier); Returns: true on success, false on error 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. See also: sem_get() and sem_acquire().PrevHomeNextsem_acquireUpshm_attach