system/libraries/Profiler.php

<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
 * Code Igniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package		CodeIgniter
 * @author		Rick Ellis
 * @copyright	Copyright (c) 2006, pMachine, Inc.
 * @license		http://www.codeignitor.com/user_guide/license.html 
 * @link		http://www.codeigniter.com
 * @since		Version 1.0
 * @filesource
 */
 
// ------------------------------------------------------------------------

/**
 * Code Igniter Profiler Class
 *
 * This class enables you to display benchmark, query, and other data
 * in order to help with debugging and optimization
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @category	Libraries
 * @author		Rick Ellis
 * @link		http://www.codeigniter.com/user_guide/libraries/benchmark.html
 */
class CI_Profiler {

 	
	// --------------------------------------------------------------------

	/**
	 * Auto Profiler
	 *
	 * This function cycles through the entire array of mark points and
	 * matches any two points that are named identially (ending in "_start"
	 * and "_end" respectively).  It then compiles the execution times for
	 * all points and returns it as an array
	 *
	 * @access	private
	 * @return	array
	 */
 	function _compile_benchmarks()
 	{
 		$obj =& get_instance();
 	
  		$times = array();
 		foreach ($obj->benchmark->marker as $key => $val)
 		{
 			// We match the "end" marker so that the list ends
 			// up in the order that it was defined
 			if (preg_match("/(.+?)_end/i", $key, $match))
 			{ 			
 				if (isset($obj->benchmark->marker[$match[1].'_end']))
 				{
 					$times[$match[1]] = $obj->benchmark->elapsed_time($match[1].'_start', $key);
 				}
 			}
 		}
 	
 		return $times;
 	}
 	
	// --------------------------------------------------------------------

}

// END CI_Profiler class
?>