Clase Time Profiler - Obtener el tiempo de ejecución de una función PHP

Con la clase Time Profiler se puede medir el tiempo que tarda en ejecutarse una determinada función.

La clase regresa el resultado de la función y el tiempo que se necesitó para ejecutar la función en cuestión de segundos y milisegundos.

Autor: Tony L. Requena

Descargar: Time Profiler

Código de la clase class.timeprofiler.php

<?php
/*------------------------------------------------------------------------------
** File:            class.timeprofiler.php
** Class:           Time Profiler
** Description:     
** Version:         1.0.1
** Created:         11-Jul-2014
** Author:          Tony L. Requena
** Homepage:        www.phpmyipcam.com 
**------------------------------------------------------------------------------
** COPYRIGHT (c) 2014 Tony L. Requena
**
** The source code included in this package is free software; you can
** redistribute it and/or modify it under the terms of the GNU General Public
** License as published by the Free Software Foundation. This license can be
** read at:
**
** http://www.opensource.org/licenses/gpl-license.php
**
** This program is distributed in the hope that it will be useful, but WITHOUT 
** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
** FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 
**------------------------------------------------------------------------------
**
** Usage:
** 
    function imprime(){
        sha1(md5("Hello"));
    }
    
    
    function blah($n=1){
     for($i = 0; $i<= $n; $i++){
      $a = $i;
     }
    }
    
    function getContent($url){
        return file_get_contents($url);
    }

    $timer = new TimeProfiler("blah", 500, array(100));
    echo "".$timer->getMicro()." µs (".$timer->getMili()." ms)";
    
    echo "<br />";
    
    $timer = new TimeProfiler("imprime");
    echo $timer->getMicro()." µs (".$timer->getMili()." ms)";

    $timer = new TimeProfiler("getContent",1,array('http://server.sivu.es/testfile.txt'));
    echo $timer->getMicro()." µs (".$timer->getMili()." ms)<br />";
    var_dump($timer->funcOutput()); /*** NEW  NEW NEW **/
**
**------------------------------------------------------------------------------ */

class TimeProfiler{ 
    private $microseconds = 0; 
    public $start = 0; 
    public $function; 
    public $end = 0; 
    public $miliseconds; 
    function __construct($func, $iterations=1, $arguments = NULL){ 
        $this->function = $func; 
        $this->microseconds = 0; 
        $this->start = microtime(true); 
         
        for($n=0;$n<$iterations;$n++){ 
            if($arguments==NULL){ 
                $this->val = call_user_func_array($func,array()); 
            }else{ 
                $this->val = call_user_func_array($func, $arguments); 
            } 
        } 
        $this->end = microtime(true); 
        $this->microseconds = $this->end - $this->start; 
        $this->miliseconds = round($this->microseconds * 1000);
        
        return $this->val; 
     
    }
    function funcOutput(){
        return $this->val;
    }
    function getMicro(){ 
        return $this->function.": ".sprintf('%f', $this->microseconds); 
    } 
    function getMili(){ 
        return $this->miliseconds; 
    } 
}
?>