sem_release
(PHP 4, PHP 5)
sem_release — Release a semaphore
說明
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.
參數
- sem_identifier
-
Return值
如果成功則回傳 TRUE，失敗則回傳 FALSE。