High resolution timing

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- PHP Manual
- Date and Time Related Extensions
- High resolution timing

# High resolution timing

- Introduction
- Installing/Configuring
  - Installation
- Examples
  - Basic usage
- HRTime\PerformanceCounter — The HRTime\PerformanceCounter class
  - 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
- HRTime\StopWatch — The HRTime\StopWatch class
  - HRTime\StopWatch::getElapsedTicks — Get elapsed ticks for all intervals
  - HRTime\StopWatch::getElapsedTime — Get elapsed time for all intervals
  - HRTime\StopWatch::getLastElapsedTicks — Get elapsed ticks for the last interval
  - HRTime\StopWatch::getLastElapsedTime — Get elapsed time for the last interval
  - HRTime\StopWatch::isRunning — Whether the measurement is running
  - HRTime\StopWatch::start — Start time measurement
  - HRTime\StopWatch::stop — Stop time measurement
- HRTime\Unit — The HRTime\Unit class