https://www.php.net/manual/en/class.hrtime-performancecounter.php
PHP: HRTime\PerformanceCounter - Manual
The HRTime\PerformanceCounter class
phpmanual
https://learn.microsoft.com/en-us/dotnet/api/system.diagnostics.performancecounter?view=netframework-4.8.1&viewFallbackFrom=netcore-3.1
PerformanceCounter Class (System.Diagnostics) | Microsoft Learn
Represents a Windows NT performance counter component.
class systemdiagnosticsmicrosoftlearn