HRTime\PerformanceCounter
PHP Manual

HRTime\PerformanceCounter::getFrequency

(PECL hrtime >= 0.4.3)

HRTime\PerformanceCounter::getFrequencyTimer frequency in ticks per second

说明

public static int HRTime\PerformanceCounter::getFrequency ( void )

Returns the timer frequency in ticks per second. This value is constant after the system start on almost any operating system.

参数

此函数没有参数。

返回值

Returns integer indicating the timer frequency.


HRTime\PerformanceCounter
PHP Manual