//Timing executation time of script
$startTime = microtime(true); //get time in micro seconds(1 millionth)
usleep(250);
$endTime = microtime(true);
echo "milliseconds to execute:". ($endTime-$startTime)*1000;<?php
$time_start = microtime(true);
// Sleep for a while
usleep(100);
$time_end = microtime(true);
$time = $time_end - $time_start;
echo "Did nothing in $time seconds\n";
?>echo date("H:i:s",$endtime-$starttime);
$duration = $endtime-$starttime;
$hours = (int)($duration/60/60);
$minutes = (int)($duration/60)-$hours*60;
$seconds = (int)$duration-$hours*60*60-$minutes*60;$d = new DateTime();
echo $d->format("Y-m-d H:i:s.v"); // v : Milliseconds