timer.php

    $mtime = microtime(); 
    $mtime = explode(' ', $mtime); 
    $mtime = $mtime[1] + $mtime[0]; 
    $starttime = $mtime; 
    
    //Do something!
    
    $mtime = microtime(); 
    $mtime = explode(" ", $mtime);
    $mtime = $mtime[1] + $mtime[0]; 
    $endtime = $mtime; 
    $totaltime = number_format($endtime - $starttime, 3);