php 性能测试工具

<?php /* * This class enables you to mark points and calculate the time difference * between them. Memory consumption can also be displayed. * * @package CodeIgniter * @subpackage Libraries * @category Libraries * @author ExpressionEngine Dev Team * @link http://codeigniter.com/user_guide/libraries/benchmark.html */ class CI_Benchmark { var $marker = array(); // -------------------------------------------------------------------- /** * Set a benchmark marker * * Multiple calls to this function can be made so that several * execution points can be timed * * @access public * @param string $name name of the marker * @return void */ function mark($name) { $this->marker[$name] = microtime(); } // -------------------------------------------------------------------- /** * Calculates the time difference between two marked points. * * If the first parameter is empty this function instead returns the * {elapsed_time} pseudo-variable. This permits the full system * execution time to be shown in a template. The output class will * swap the real value for this variable. * * @access public * @param string a particular marked point * @param string a particular marked point * @param integer the number of decimal places * @return mixed */ function elapsed_time($point1 = '', $point2 = '', $decimals = 4) { if ($point1 == '') { return '{elapsed_time}'; } if ( ! isset($this->marker[$point1])) { return ''; } if ( ! isset($this->marker[$point2])) { $this->marker[$point2] = microtime(); } list($sm, $ss) = explode(' ', $this->marker[$point1]); list($em, $es) = explode(' ', $this->marker[$point2]); return number_format(($em + $es) - ($sm + $ss), $decimals); } // -------------------------------------------------------------------- /** * Memory Usage * * This function returns the {memory_usage} pseudo-variable. * This permits it to be put it anywhere in a template * without the memory being calculated until the end. * The output class will swap the real value for this variable. * * @access public * @return string */ function memory_usage() { return '{memory_usage}'; } } // END CI_Benchmark class /* End of file Benchmark.php */ /* Location: ./system/libraries/Benchmark.php */

 

一个小例子，如下：

<?php header("Content-Type:text/html;charset=UTF-8"); if( ! defined('BASEPATH') ) { define ('BASEPATH', $_SERVER['DOCUMENT_ROOT'].'/news/'); } require_once BASEPATH.'service/Json_service.php'; require_once BASEPATH.'common/Benchmark.php'; $benchmark = new CI_Benchmark(); $benchmark->mark('10'); $benchmark->mark('11'); $benchmark->mark('12'); $jsonservice = new JsonService(); $benchmark->mark('13'); $resultjson = $jsonservice->getNewsTitleJsonArray($categoryid=143746653,$index=1,$max=20,$lastpage,$lastid); $benchmark->mark('14'); $jsonservice->clear(); //$size = strlen($resultjson); //header("Content-Length: $size"); $benchmark->mark('15'); echo '-----------------------------------------'.'<br>'; echo $benchmark->elapsed_time('10','11',6).'<br>'; echo $benchmark->elapsed_time('11','12',6).'<br>'; echo $benchmark->elapsed_time('12','13',6).'<br>'; echo $benchmark->elapsed_time('13','14',6).'<br>'; echo $benchmark->elapsed_time('14','15',6).'<br>'; ?>