Installation and usage examples of PHP extension Xdebug_PHP tutorial

What is Xdebug? It is a tool that can be used to debug and run PHP code. The following editor will introduce to you the Xdebug installation method. The following tutorial is based on Linux and Windows systems.

Q: What is xdebug?

A:xdebug is an open source php debugger, loaded and used as a php module.

I found out last week that the RC (release candidate) version 2 of xdebug was released, so I took it and installed it. I also wrote an installation manual. I hope it will be useful to everyone.

Installation of linux xdebug module and related tools:

Test environment: Ubuntu12.04+PHP 5.3.10

The code is as follows

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代码如下	复制代码
# 获取xdebug最新源码包 git clone git://github.com/derickr/xdebug.git cd xdebug/ # 如果没有安装phpize扩展,请尝试:apt-get install phpize phpize ./configure --enable-xdebug make && make install

# Get the latest source code package of xdebug

git clone git://github.com/derickr/xdebug.git
cd xdebug/
# If the phpize extension is not installed, please try: apt-get install phpize

phpize

代码如下

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[xdebug] ;扩展文件路径 zend_extension = /usr/lib/php5/20090626+lfs/xdebug.so   ;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 ;跟踪格式 xdebug.trace_format = 0 ;输出文件夹 xdebug.trace_output_dir=/tmp/xdebug ;输出文件名格式 xdebug.trace_output_name = trace.%c.%p ;开启分析器 xdebug.profiler_enable = On ;输出路径 xdebug.profiler_output_dir = /tmp/xdebug ;输出文件名格式 xdebug.profiler_output_name = cachegrind.out.%p ;记录内存使用情况 xdebug.show_mem_delta = On

./configure --enable-xdebug

make && make install

The path generated here is: /usr/lib/php5/20090626+lfs/xdebug.so Then change the php.ini file Add these configuration options of your own choice

The code is as follows

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[xdebug] ;Extension file path zend_extension = /usr/lib/php5/20090626+lfs/xdebug.so

;Turn on automatic tracking
xdebug.auto_trace = On

;Enable exception tracking

代码如下	复制代码
[Xdebug] zend_extension_ts=”c:/php5/ext/xdebug-2.0.0RC1.dll” xdebug.auto_trace=on xdebug.collect_params=on xdebug.collect_return=on xdebug.trace_output_dir=”c:/Temp/xdebug” xdebug.profiler_enable=on xdebug.profiler_output_dir=”c:/Temp/xdebug”

xdebug.show_exception_trace = On ;Enable remote debugging to start automatically xdebug.remote_autostart = On ;Enable remote debugging xdebug.remote_enable = On ;Collect variables xdebug.collect_vars = On ;Collect return value xdebug.collect_return = On ;Collect parameters xdebug.collect_params = On ;Track format xdebug.trace_format = 0 ;Output folder xdebug.trace_output_dir=/tmp/xdebug ;Output file name format xdebug.trace_output_name = trace.%c.%p ;Open analyzer xdebug.profiler_enable = On ;Output path xdebug.profiler_output_dir = /tmp/xdebug ;Output file name format xdebug.profiler_output_name = cachegrind.out.%p ;Record memory usage xdebug.show_mem_delta = On

After the configuration is completed, you can use php -i|grep xdebug to query the configured values Windows system xdebug module installation 1. Go to www.xdebug.org to download the module file of the corresponding version of php. Save the downloaded file to the ext directory of php. You can modify the name of the file yourself, for example, save it as: xdebug-2.0.0RC1.dll 2. Modify php.ini and add the following information

The code is as follows	Copy code
[Xdebug] zend_extension_ts=”c:/php5/ext/xdebug-2.0.0RC1.dll” xdebug.auto_trace=on xdebug.collect_params=on xdebug.collect_return=on xdebug.trace_output_dir=”c:/Temp/xdebug” xdebug.profiler_enable=on xdebug.profiler_output_dir=”c:/Temp/xdebug”

Parameter explanation:
zend_extension_ts=”c:/php5/ext/xdebug-2.0.0RC1.dll”
;Load xdebug module. You cannot load it here with extension=xdebug-2.0.0RC1.dll. You must load it with zend. Otherwise, after installation, the xdebug section printed by phpinfo will have a warning message "Must LOADED AS ZEND EXTENSION" (the reason is unknown).

xdebug.auto_trace=on;
;Automatically open the "monitoring function call process" function mode. This function can output the monitoring information of function calls in the form of a file in the directory you specify. The default value of this configuration item is off.

xdebug.collect_params=on;
;Turn on the function of collecting "function parameters". Include the parameter values ​​of the function call in the monitoring information of the function procedure call. The default value of this configuration item is off.

xdebug.collect_return=on
;Turn on the function of collecting "function return values". Include the return value of the function in the monitoring information of the function procedure call. The default value of this configuration item is off.

xdebug.trace_output_dir=”c:/Temp/xdebug”
;Set the path to the output file of function call monitoring information.

xdebug.profiler_enable=on
;Open the performance monitor.

xdebug.profiler_output_dir=”c:/Temp/xdebug”;
;Set the path to the performance monitoring information output file.

There are also some more specific parameter settings, please see: http://www.xdebug.org/docs-settings.php

3. Restart apache

In this way, when running php locally, some debugging information files will be generated in the set directory:

The file name format of the function call process monitoring information file: trace.××××××.xt. This file can be viewed directly, and it contains information such as the running time of the function, parameter values ​​of the function call, return value, file and location, etc. The content format is relatively intuitive.
The file name format of the performance monitoring file is: cachegrind.out.XXXXXXXXXXXX.
This file can also be viewed directly, but the information format is not easy for humans to understand,
So we need the next piece of software.
2. Install wincachegrind
Since the content of the performance monitoring file: cachegrind.out.×××××××× file is not easy to be understood by humans, we need a tool to read it. There is such a software under windows: wincachegrind.
1. Go to http://sourceforge.net/projects/wincachegrind/ to download and install wincachegrind
2. After installation and running, click Tools->options and set your working folder (the value of xdebug.profiler_output_dir in php.ini)
In this way, you can view the information of the performance monitoring file more intuitively.

Another: I don’t know which parameter is not set correctly. All the function call process monitoring information after running PHP on my machine is written in a trace. If you know it, please give me some guidance

http://www.bkjia.com/PHPjc/632848.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632848.htmlTechArticleWhat is Xdebug? It is a tool that can be used to debug and run PHP code. The following editor will introduce to you the Xdebug installation method. The following tutorial is based on Linux and Windows systems. ...