xhprof扩展安装与使用

一、xhprof扩展安装步骤

1、安装

wget http://pecl.php.net/get/xhprof-0.9.4.tgz tar -zxvf xhprof-0.9.4.tgz
cd xhprof-0.9.4
cd extension/
phpize
./configure
make
make install

unzip xhprof-php7.zip
cd xhprof-php7/extension/
phpize
./configure --with-php-config=/usr/local/php/bin/php-config
make
make install

2、修改php.ini配置文件

/home/wwwroot/default/xhprof_data

[xhprof]
extension = xhprof.so
// xhprof分析结果文件存放根目录
xhprof.output_dir = /home/wwwroot/default/xhprof_data

3、添加一个环境变量

XHPROF_ROOT_PATH

vim /usr/local/php/etc/php-fpm.conf
env[XHPROF_ROOT_PATH]=/usr/local/php/include/xhprof/

4、将xhprof核心源代码复制到上述环境变量所指定的目录

cp -r xhprof_lib /usr/local/php/include/xhprof/xhprof_lib

5、将下面两个目录复制到

xhprof_data

的同级目录下

//执行
cp -r xhprof_html /home/wwwroot/default/xhprof_html
cp -r xhprof_lib /home/wwwroot/default/xhprof_lib

//改变xhprof_data目录拥有者，为了浏览器访问时能在xhprof_data目录下写入文件
chown -R www:www xhprof_data

6、访问xhprof根目录

/home/wwwroot/default/

http://demo.com/xhprof_data/

7、形象化的查看分析结果

yum install graphviz

二、xhprof的使用

1、xhprof性能分析小demo

<?php

xhprof_enable(XHPROF_FLAGS_CPU | XHPROF_FLAGS_MEMORY);

$n = 5;

echo jc($n);
echo '<br>';

echo jc($n);
echo '<br>';

echo jc($n);
echo '<br>';

function jc($n){
if($n == 1){
return 1;
}

return $n * jc($n-1);
}

function jc2($n){
$m = 1;
for($i=1; $i<=$n; $i++){
$m = $m * $i;
}

return $m;
}

function jc3($n){
$arr = [];
$arr[1] = 1;

for($i = 2; $i<=$n; $i++){
$arr[$i] = $i * $arr[$i-1];
}

return $arr[$n];
}

$data = xhprof_disable();
//$_SERVER['XHPROF_ROOT_PATH'] 这就是第三步添加的那个环境变量
include_once $_SERVER['XHPROF_ROOT_PATH'] . "xhprof_lib/utils/xhprof_lib.php";
include_once $_SERVER['XHPROF_ROOT_PATH'] . "xhprof_lib/utils/xhprof_runs.php";
$x = new XHProfRuns_Default();

//拼接文件名
$xhprofFilename = date('Ymd_His');

//print_r($data);die;//此处的打印数据看起来非常不直观，所以需要安装yum install graphviz 图形化界面显示,更直观
$x->save_run($data, $xhprofFilename);

当我在点

[View Full Callgraph]

查看图形分析界面时，问题出现了，如下图：



好在网上查到原因是，php配置文件中有个disable_functions禁用函数列表，把里面的

proc_open

去掉即可。

2、实际项目中该如何引入xhprof

<?php
namespace backend\component;

use Yii;
use common\component\baseController;

class backendBaseController extends baseController
{
public $layout = "/content";
public $enableCsrfValidation = false;

public static $profiling = 0;

public function init(){
parent::init();

self::$profiling = 1;// !(mt_rand() % 9);
if  (self::$profiling) {
xhprof_enable(XHPROF_FLAGS_CPU | XHPROF_FLAGS_MEMORY);
}
}

public function __destruct()
{
if(self::$profiling){
$data = xhprof_disable();
//$_SERVER['XHPROF_ROOT_PATH'] 该环境变量由第3步得来
include_once $_SERVER['XHPROF_ROOT_PATH'] . "/xhprof_lib/utils/xhprof_lib.php";
include_once $_SERVER['XHPROF_ROOT_PATH'] . "/xhprof_lib/utils/xhprof_runs.php";
$x = new XHProfRuns_Default();

//当前路由
$routeName = Yii::$app->requestedRoute;
//路由为空，则说明是首页
if (empty($routeName)){
$routeName = Yii::$app->defaultRoute;
}

//拼接xhprof分析结果保存文件名
$xhprofFilename = str_replace('/', '_', $routeName).'_'.date('Ymd_His');
$x->save_run($data, $xhprofFilename);
}
}
}

总结

xhprof

参考资料