High resolution timing
Guide
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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 underlying APIs.
Intro
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 underlying APIs.
Note
As of PHP 7.3.0 the related function hrtime() is part of the core.
Setup Examples Performancecounter Stopwatch Unit