php man page for sem_release

SEM_RELEASE(3)								 1							    SEM_RELEASE(3)

sem_release - Release a semaphore

SYNOPSIS
       bool sem_release (resource  $sem_identifier)

DESCRIPTION
       sem_release(3) releases the semaphore if it is currently acquired by the calling process, otherwise a warning is generated.

	After releasing the semaphore, sem_acquire(3) may be called to re-acquire it.

PARAMETERS
	      o $sem_identifier
		- A Semaphore resource handle as returned by sem_get(3).

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

SEE ALSO
       sem_get(3), sem_acquire(3).

PHP Documentation Group 													    SEM_RELEASE(3)