HRTime\StopWatch::start
(PECL hrtime >= 0.4.3)
HRTime\StopWatch::start — Start time measurement
说明
public HRTime\StopWatch::start
( void
) : 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.