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