1.2.1517. ext/hrtime¶
High resolution timing Extension.
The HRTime extension implements a high resolution StopWatch class. It uses the best possible API 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 system.
<?php
$c = new HRTime\StopWatch;
$c->start();
/* measure this code block execution */
for ($i = 0; $i < 1024*1024; $i++);
$c->stop();
$elapsed0 = $c->getLastElapsedTime(HRTime\Unit::NANOSECOND);
/* measurement is not running here*/
for ($i = 0; $i < 1024*1024; $i++);
$c->start();
/* measure this code block execution */
for ($i = 0; $i < 1024*1024; $i++);
$c->stop();
$elapsed1 = $c->getLastElapsedTime(HRTime\Unit::NANOSECOND);
$elapsed_total = $c->getElapsedTime(HRTime\Unit::NANOSECOND);
?>
See also ext/hrtime manual.
1.2.1517.1. Specs¶
Short name |
Extensions/Exthrtime |
Rulesets |
|
Exakat since |
1.1.5 |
PHP Version |
All |
Severity |
|
Time To Fix |
|
Precision |
Very high |
Available in |