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    HRTime\StopWatch::start

    (PECL hrtime >= 0.4.3)

    HRTime\StopWatch::start — Start time measurement

    说明

    public HRTime\StopWatch::start(): void

    Starts the time measurement. It has no effect if the measurement was already started. The measurement will be continued if it was previously stopped.

    参数

    此函数没有参数。

    返回值

    Returns void.

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