Table of Contents
回复讨论(解决方案)
Home Backend Development PHP Tutorial 新人问老问题:PHP的代码用什么来调试?

新人问老问题:PHP的代码用什么来调试?

Jun 23, 2016 pm 02:03 PM

PHP代码用什么工具来调试?网上有说var_dump ,但我没明白是怎么用的,还有其他什么更简单的方法吗?

我是新手,回答时还请一定详细些。非常感谢。


回复讨论(解决方案)

1、看错误日志,也最直接的
2、脚本中间强制截取 var_dump();exit;
3、php debug

1、看错误日志,也最直接的
2、脚本中间强制截取 var_dump();exit;
3、php debug
+1

echo / print_r/ var_dump()  常用的就这几个。

然后再打开php的错误提示功能

用Zend studio 不错

Zend Debugger 
XDebug

一直用
echo '

';  <br> print_r($var);  <br> 怎么破?  <p class="sougouAnswer">  具体需要看楼主调试什么信息的。如果是打印sql什么的,还是die($sql),如果是查看页面程序执行是否报错,可以打开错误调试的开关, </p> <p class="sougouAnswer">  echo / print_r/ var_dump()  常用的就这几个。  <br>  <br> 然后再打开php的错误提示功能  <br>  <br> 打开php的错误提示功能   <br>  <br> 请问这个怎么打开?谢谢。 </p> <p class="sougouAnswer">  我是想在测试时像ASP的一样,只要有错误,就会提示。现在是什么都不提示。 </p> <p class="sougouAnswer">  用Zend studio 不错  <br> Zend studio是一个外加的工具软件是吧?  <br> </p> <p class="sougouAnswer">  引用 3 楼 jordan102 的回复:echo / print_r/ var_dump()  常用的就这几个。  <br>  <br> 然后再打开php的错误提示功能  <br>  <br> 打开php的错误提示功能   <br>  <br> 请问这个怎么打开?谢谢。  <br>  <br> ini_set("display_error",On);  <br> error_reporting(E_ALL); </p> <p class="sougouAnswer">  引用 8 楼 kqyx_cn 的回复:引用 3 楼 jordan102 的回复:echo / print_r/ var_dump()  常用的就这几个。  <br>  <br> 然后再打开php的错误提示功能  <br>  <br> 打开php的错误提示功能   <br>  <br> 请问这个怎么打开?谢谢。  <br>  <br> ini_set("display_error",On);  <br> error_reporting(E_ALL);  <br>  ……  <br>  <br> 其中ini_set函数是用来修改PHP的ini配置文件的,意思是把显示错误的功能打开  <br> error_reporting函数是用来决定显示哪些错误,E_ALL代表显示所有错误,包括WARNING和NOTICE </p> <p class="sougouAnswer">  1、看错误日志,也最直接的  <br> 2、脚本中间强制截取 var_dump();exit;  <br> 3、php debug  <br> </p> <p class="sougouAnswer">  1、看错误日志,也最直接的  <br> 2、脚本中间强制截取 var_dump();exit;  <br> 3、php debug  <br> 请问1在哪里看? </p> <p class="sougouAnswer">  调试??不知道你用的开发工具是什么 初学者用记事本,将写出来的网页运行,若不是自己想要的结果,可以进行 echo 一下 最简单!并且一般情况下,sql语句会写错 ,那你echo 一下该sql 将结果放到数据库中运行,看看哪里有错  </p> <p class="sougouAnswer">  写代码我用的是editplus,环境是用护卫神的套装配置的,没有其他的软件了。  <br> 我是刚开始学习PHP。  <br> 用echo?比如我写一段循环有错误,那我该echo哪一句呢?  <br> 我是不是应该找一本书看看吧?不能像网上朋友们说的那样,只看电子版的入门教程,教程里可没讲到怎么去调试。  <br> 或许大家都对我的这些问题看成不是问题了吧,说得都比较简略,但对我来说就是不详细了,让我不知道怎么下手去操作。 </p> <p class="sougouAnswer">  用dreamwave吧 </p> <p class="sougouAnswer">  有木有人知道XDEBUG在ECLIPSE为啥设了断点不停?  <br>    <br>      <br> [/img]   </p> <p class="sougouAnswer">    <br> 这配置有啥不对嘛?  <br> 端口我也查了 netstat -anp | grep 9001  没占用啊,虽然没在断点听,但它却显示了我要的结果,可为啥就无法断点调试呢? </p> <p class="sougouAnswer">  用晚上时间配了两天还是没配起来,写个鸟网页真蛋疼  <br> 额....实在不行不搞了,插var_drump </p> <p class="sougouAnswer">  我觉得www.php100.com的教程不错,你可以去看看。 </p>
Copy after login
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1670
14
PHP Tutorial
1274
29
C# Tutorial
1256
24
Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Apr 17, 2025 am 12:06 AM

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values ​​to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

How does PHP type hinting work, including scalar types, return types, union types, and nullable types? How does PHP type hinting work, including scalar types, return types, union types, and nullable types? Apr 17, 2025 am 12:25 AM

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.

The Enduring Relevance of PHP: Is It Still Alive? The Enduring Relevance of PHP: Is It Still Alive? Apr 14, 2025 am 12:12 AM

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP and Python: Different Paradigms Explained PHP and Python: Different Paradigms Explained Apr 18, 2025 am 12:26 AM

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 and Python: Code Examples and Comparison PHP and Python: Code Examples and Comparison Apr 15, 2025 am 12:07 AM

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

How do you prevent SQL Injection in PHP? (Prepared statements, PDO) How do you prevent SQL Injection in PHP? (Prepared statements, PDO) Apr 15, 2025 am 12:15 AM

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.

See all articles