简介

The HRTime extension implements a high resolution StopWatch class. It uses the best possible APIs on different platforms which brings resolution up to nanoseconds. It also makes possible to implement a custom stopwatch using low level ticks delivered by the underlaying APIs.

Note: As of PHP 7.3.0 the related function hrtime() is part of the core.

php 安装／配置需求 php hrtime the hrtime performancecounter class php hrtime the hrtime stopwatch class php hrtime the hrtime unit class php gd 和图像处理函数由文件或 url 创建一个新图象。php hrtime performancecounter timer frequency in ticks per second php hrtime performancecounter current ticks from the system php hrtime performancecounter ticks elapsed since the given value php hrtime stopwatch get elapsed ticks for all intervals php hrtime stopwatch get elapsed time for all intervals php hrtime stopwatch get elapsed ticks for the last interval php hrtime stopwatch get elapsed time for the last interval php hrtime stopwatch whether the measurement is running php hrtime stopwatch start time measurement php hrtime stopwatch stop time measurement php hrtime 范例 php hrtime 安装／配置 php imagick simulates a polaroid picture php hrtime 简介 php sdo 函数 get the namespace uri of the type