PHP Functions Essential Reference

sem_release

bool sem_release(int id) 

Releases the semaphore with the given ID.

Returns:

TRUE on success; FALSE on failure

Description:

sem_release() releases the semaphore with the ID specified by id , which must be a valid semaphore ID as returned by sem_get(). Once released, a semaphore can no longer be used by the script; however, a new semaphore ID with the same key can be acquired and used.

Version:

PHP 3 since 3.0.6, PHP 4

See also:

sem_acquire() 
sem_get() 

Example:

Release a semaphore

sem_release($sem_id);