PHP Time

time.php

<?php
/**
 * Time difference logging function
 * 
 * $start time from PHP microtime(true) // returns seconds as float
 * $end time from PHP microtime(true) 
 */
function logTimeDiff($start, $end) {
  $seconds  = $end - $start;
  $milli = $seconds / 1000;
  return $milli . 'ms, ' . $seconds . 'sec' . PHP_EOL;
}

function testLogTimeDiff($microseconds) {
  $a = microtime(true);
  usleep($microseconds); 
  echo logTimeDiff($a, microtime(true));
}

testLogTimeDiff(2000000); // wait for 2 seconds

?>