sem_release

    (PHP 4, PHP 5, PHP 7, PHP 8)

    sem_release — Release a semaphore

    说明

    sem_release(SysvSemaphore $semaphore): bool

    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

    semaphore

    A Semaphore as returned by sem_get().

    返回值

    成功时返回 true， 或者在失败时返回 false。

    更新日志

    版本 说明
    8.0.0 semaphore expects a SysvSemaphore instance now; previously, a resource was expected.

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