一:安装 安装方法一:编译安装 1、下载PHP的XDebug扩展,网址:http://xdebug.org/ # wget http://pecl.php.net/get/xdebug-2.1.2.tgz # tar -xzf xdebug-2.1.2.tgz # xdebug-2.1.2 # cd xdebug-2.1.2 # /usr/local/php/bin/phpize # ./configure --enable-
一:安装
安装方法一:编译安装
1、下载PHP的XDebug扩展,网址:http://xdebug.org/
# wget http://pecl.php.net/get/xdebug-2.1.2.tgz
# tar -xzf xdebug-2.1.2.tgz
# xdebug-2.1.2
# cd xdebug-2.1.2
# /usr/local/php/bin/phpize
# ./configure --enable-xdebug --with-php-config=/usr/local/php/bin/php-config
# make && make install
不需要自己拷贝xdebug.so了,下面可以省。# cp modules/xdebug.so /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613
注:/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/不同的PHP版本路径不同,也不一定要放在该路径,可以在zend_extension_ts中自行指定xdebug.so所在位置。
================================================
安装方法二:自动安装
http://pecl.php.net/package/xdebug
# /usr/local/php/bin/pecl install xdebug
安装成功
windows下安装:
需要注意使用custom installation instructions. 将你的phpinfo生成的内容放进去测试 看看下载那个dll
===============================================
二:修改php配置模块
1.配置
修改php.ini,去除PHP加速模块,增加以下配置信息支持XDebug扩展
手动安装
[Xdebug]
zend_extension_ts="/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/xdebug.so"
xdebug.profiler_enable=on
xdebug.trace_output_dir="/tmp/xdebug"
xdebug.profiler_output_dir="/tmp/xdebug"
自动安装
[Xdebug]
extension=xdebug.so
xdebug.profiler_enable=on
xdebug.trace_output_dir="/tmp/xdebug"
xdebug.profiler_output_dir="tmp/xdebug"
Windows下配置
用phpinfo()查看php配置文件位置,增加:
extension=php_xdebug-2.2.0-5.3-vc9.dll [Xdebug] ;开启自动跟踪 xdebug.auto_trace = On ;开启异常跟踪 xdebug.show_exception_trace = On ;开启远程调试自动启动 xdebug.remote_autostart = On ;开启远程调试 xdebug.remote_enable = On ;收集变量 xdebug.collect_vars = On ;收集返回值 xdebug.collect_return = On ;收集参数 xdebug.collect_params = On xdebug.remote_enable=on xdebug.remote_handler=dbgp xdebug.remote_host=127.0.0.1 xdebug.remote_port=9000 xdebug.profiler_enable=on ;xdebug.trace_output_name="%H.%s" xdebug.trace_output_dir="E:\PHPnow\xdebug" xdebug.profiler_output_dir="E:\PHPnow\xdebug"
------------------------------
2.权限
mkdir -p /tmp/xdebug
chmod 755 /tmp/xdebug
chown www:www /tmp/xdebug
-----------------------------
3.重启
/usr/local/apache/bin/apachectl restart
说明:如果phpinfo()没有打印这个信息说明没有配置正确!
------------------------------
4.停用
说明:如果不分析系统一定要记得关闭xdebug.profiler不然会生成许多文件
xdebug.profiler_enable=off
====================================
三:分析系统
1.访问你的网站
将首页上各种链接点击几遍,XDebug在/tmp/xdebug目录生成文件
2.使用图形分析工具wincachedgrind分析生成的文件
下载地址:http://sourceforge.net/projects/wincachegrind/files/
3.下载图形化工具kcachegrind在windows下的可执行版
下载地址http://sourceforge.net/projects/precompiledbin/files
用kcachegrind来看会更形象,注意需要修改从linux中执行的文件的php文件路径,这样就可以了sourcecode.
查看代码执行顺序
更复杂的代码:
<?php define( 'BOOSTER', 5 ); define( 'CAPSULE', 2 ); define( 'MINUTE', 60 ); define( 'STAGE', 3 ); define( 'PRODUCTION', 1000 ); class Part { function Part() { $this->build( MINUTE ); } function build( $delay = 0 ) { if ( $delay 0 ) { } } } class Capsule extends Part { function Capsule() { parent::Part(); $this->build( CAPSULE * MINUTE ); } } class Booster extends Part { function Booster() { parent::Part(); $this->build( BOOSTER * MINUTE ); } } class Stage extends Part { function Stage() { parent::Part(); $this->build( STAGE * MINUTE ); } } class SpaceShip { var $booster; var $capsule; var $stages; function SpaceShip( $numberStages = 3 ) { $this->booster = new Booster(); $this->capsule = new Capsule(); $this->stages = array(); while ( $numberStages-- >= 0 ) { $stages[$numberStages] = new Stage(); } } } $toys = array(); $count = PRODUCTION; while ( $count-- >= 0 ) { $toys[] = new SpaceShip( 2 ); } ?> <title> Toy Factory Output </title> <h1 id="Toy-Production">Toy Production</h1> <p>Built echo PRODUCTION . ' toys' ?></p>
分析日志
其他使用参考:xdebug基本使用
===================================
参考
为 PHP 应用提速、提速、再提速!,第 2 部分: 分析 PHP 应用程序以查找、诊断和加速运行缓慢的代码
http://www.ibm.com/developerworks/cn/opensource/os-php-fastapps2/index.html
http://hi.baidu.com/%D4%E7%B9%C8%C9%E7%C7%F8/blog/item/d8fedafb7843c66b024f56cb.html
使用Xdebug跟踪代码执行
http://book.51cto.com/art/200906/126516.htm
KCacheGrind windows 系統下的代替方案
- WinCacheGrind
- windows port of kcachegrind
- Webgrind
可分析由xdebug產出的cachegrind.xxx檔,簡易版的kcachegrind。
由原linux的kcachegrind,重新編譯在windows上可執行版,功能與linux kcachegrind相同。
網頁版的callgrind,搭配xdebug可做即時線上做php script profile。
===================================
NetBeans配置Xdebug
http://blog.csdn.net/21aspnet/article/details/6754034
===================================
另外还有一个扩展也很好:
http://pecl.php.net/package/xhprof
安装参考:
http://www.phpv5.com/blog/archives/66
参考:
用 kcachegrind 调优 squid 2.7 笔记
http://blog.sunyixing.com/archives/378

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