Find elapsed time in php using microtime.
<?php
$s = microtime(true);
sleep(1); // 1 seconds
$e = microtime(true);
$timediff = $e - $s;
echo 'Elapsed time (seconds): ' . sprintf('%0.2f', $timediff) . "\n";
?>Elapsed time (seconds): 1.00
Env: PHP 7.3.18 (Linux)
