# The HRTime\PerformanceCounter class

(PECL hrtime >= 0.4.3)

## 简介

## 类摘要

class HRTime\PerformanceCounter {
/* 方法 */
public static getFrequency(): int
public static getTicks(): int
public static getTicksSince(int `$start`): int
}

## 目录

- HRTime\PerformanceCounter::getFrequency — Timer frequency in ticks per second
- HRTime\PerformanceCounter::getTicks — Current ticks from the system
- HRTime\PerformanceCounter::getTicksSince — Ticks elapsed since the given value

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