HRTime\PerformanceCounter
PHP Manual

HRTime\PerformanceCounter::start

(PECL hrtime >= 0.4.3)

HRTime\PerformanceCounter::startStart 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.


HRTime\PerformanceCounter
PHP Manual