PHP调试工具Xdebug安装配置教程
说道PHP代码调试,对于有经验的PHPer,通过echo、print_r、var_dump函数,或PHP开发工具zend studio、editplus可解决大部分问题,但是对于PHP入门学习的童鞋来说有一定的难度,而且仅仅通过上述这些PHP调试手段,也很难准确发现PHP性能方面的问题,Xdebug是一个非常有用的PHP调试工具。
Xdebug作为PHP调试工具,提供了丰富的调试函数,也可将Xdebug安装配置为zend studio、editplus调试PHP的第三方插件,通过开启自动跟踪(auto_trace)和分析器功能,可以直观的看到PHP源代码的性能数据,以便优化PHP代码。今天和大家分享PHP调试工具Xdebug安装以及配置方面的基础知识。
Xdebug安装教程
下载Xdebug?????? http://xdebug.org
首先我们需要下载Xdebug,务必根据安装的PHP版本,选择合适的Xdebug版本,如果你不清楚安装的PHP版本,你可以通过phpinfo()函数参看,同时Xdebug也提供了phpinfo输出信息分析工具来帮助你分析如何安装Xdebug,只要将phpinfo输出信息复制提交即可,地址:Xdebug phpinfo信息分析地址
安装Xdebug
将下载的php_xdebug-2.1.0-5.3-vc6.dll复制到PHP安装目录下的ext目录,ext目录专门用来存放PHP扩展库DLL文件。
配置php.ini
安装Xdebug的最后一步就是配置php.ini文件,在末尾添加
[Xdebug]zend_extension="c:/php/ext/php_xdebug-2.1.0-5.3-vc6.dll"
最后重启Apache服务器,通过phpinfo()函数,可以看到

PHP Xdebug配置信息
Xdebug配置提示:PHP5.3之前版本配置Xdebug时使用zend_extension_ts,对于PHP5.3以上版本,使用zend_extension。?
XDEBUG NOT LOADED AS ZEND EXTENSION信息出现的原因
出现XDEBUG NOT LOADED AS ZEND EXTENSION的原因是在安装Xdebug时由于我们将Xdebug的DLL文件复制到了php\ext目录下,容易以PHP扩展库的形式加载Xdebug,在php.ini文件中添加了
extension=php_xdebug-2.1.0-5.3-vc6.dll?
这是错误的Xdebug安装方式,必须以zend方式加载。
至此PHP Xdebug的基础安装教程就结束了,下面我们需要对Xdebug作一些基础配置。
Xdebug分析器功能配置教程
在安装完Xdebug后,我们还需要对Xdebug做基础配置,默认Xdebug的PHP函数自动跟踪(auto_trace)功能、分析器功能并没有开启,作为调试PHP代码的需要,有些Xdebug配置选项最好开启。
在此之前我们需要创建Xdebug自动跟踪以及分析器输出文件的存放目录,务必确保目录是可读写的,此处我在D:\PHPWeb\下创建了xdebug\trace以及xdebug\profiler目录。
最后在php.ini配置文件中完成Xdebug的配置工作,找到
[Xdebug]zend_extension="c:/php/ext/php_xdebug-2.1.0-5.3-vc6.dll"
?在此之后添加Xdebug配置信息
xdebug.auto_trace=1xdebug.collect_params=1xdebug.collect_return=1xdebug.trace_output_dir="D:/PHPWeb/xdebug/trace"xdebug.profiler_enable=1xdebug.profiler_output_dir="D:/PHPWeb/xdebug/profiler"
?最后保存php.ini,并重启Aapche服务器即可。
?
利用Xdebug测试脚本执行时间
使用Xdebug_time_index()来显示时间
测试脚本占用的内存:
xdebug_memory_usage()
xdebug还提供了一个xdebug_peak_memory_usage()来查看内存占用的峰值
Xdebug部分配置选项说明
xdebug.auto_trace = 1
是否允许Xdebug跟踪函数调用,跟踪信息以文件形式存储,默认值为0
collect_params = 1
是否允许Xdebug跟踪函数参数,默认值为0
xdebug.collect_return = 1
是否允许Xdebug跟踪函数返回值,默认值为0
xdebug.profiler_enable = 1
打开xdebug的性能分析器,以文件形式存储,这项配置是不能以ini_set()函数配置的,默认值为0
xdebug.profiler_output_dir
性能分析文件的存放位置,默认值为/tmp
xdebug.profiler_output_name
性能分析文件的命名规则,默认值为cachegrind.out.%p
xdebug.trace_output_dir
函数调用跟踪信息输出文件目录,默认值为/tmp
xdebug.trace_output_name
函数调用跟踪信息输出文件命名规则,默认为trace.%c
特别说明:Xdebug的trace和profiler的输出文件名规则是可以更改的,比如将文件名命名为具体跟踪的PHP执行文件名、进程ID、随机数等,非常方便,更多的Xdebug配置选项说明,请参考官网的Xdebug配置选项说明。
至此PHP调试工具Xdebug教程之Xdebug的安装和配置就介绍完了,今后还将陆续介绍Xdebug如何在zend studio以及editplus中配置使用。

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Dreamweaver Mac version
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

WebStorm Mac version
Useful JavaScript development tools