sem_release
(PHP 4, PHP 5)
sem_release — Release a semaphore
说明
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.
参数
- sem_identifier
-
返回值
如果成功则返回 TRUE，失败则返回 FALSE。
