(PHP 4, PHP 5, PHP 7)
Release a semaphore
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().
Returns:
Returns TRUE on success or FALSE on failure.
See also:
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