(PHP 4, PHP 5, PHP 7, PHP 8)
sem_release — Release a semaphore
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.
semaphore
A Semaphore as returned by sem_get().
Version | Description |
---|---|
8.0.0 | semaphore expects a SysvSemaphore instance now; previously, a resource was expected. |