PHP代码性能的分析方法

php代码的性能分析。

你可以用xdbug去分析。

但是更好的选择是facebook的性能分析工具xhprof。

它可以图形化。前提是你安装了gd库，你也可能遇到一些小问题。我记得要更新linux的图像库。

安装xhprof扩展:pecl install xhprof .

<?php
/**
*
*
* Beck Confidential
* Copyright (c) 2013, Beck Corp. <Beck.Bi>.
* All rights reserved.
*
* PHP version 5
*
* @category Aug
* @package package_name
* @author beck
* @date 2013-8-13
* @license
* @link
*
*/
class Xhprof
{
protected $flags = 0;
protected $options = array();
protected $xhprofData = array();
/**
* 配置你的xhprof 你可以在php的官网看着个应用的说明
* @param unknown $config
* @throws ExtensionNotFoundException
*/
public function __construct($config = array())
{
if (!extension_loaded(‘xhprof’)) {
throw new ExtensionNotFoundException(
‘Configuration error! Make sure you have xhprof installed correctly.
please refer http://www.php.net/manual/en/xhprof.examples.php for detail.’
);
}
if (!empty($config[‘flags’])) {
$this->flags = (int)$config[‘flags’];
}
if (!empty($config[‘options’])) {
$this->options = $config[‘options’];
}
}
/**
* 开启调试
*/
public function enable()
{
xhprof_enable($this->flags, $this->options);
}
public function disable()
{
$this->xhprofData = xhprof_disable();
}
/**
*显示调试结果
* 你可能需要配置一个apache/nginx虚拟主机
*/
public function show()
{
$this->disable();
include_once “xhprof_lib/utils/xhprof_lib.php”;
include_once “xhprof_lib/utils/xhprof_runs.php”;
$xhprof_runs = new XHProfRuns_Default();
$run_id = $xhprof_runs->save_run($this->xhprofData, “xhprof_testing”);
echo “<a href=’http://pear.kang.com/xhprof_html/index.php?run={$run_id}&source=xhprof_testing’ target=’_blank’>see xhprof result</a>”;
}
}