Open Source PHP Debuggers

You can use this package instead of var_dump() or print_r() PHP functions.

PBL (aka PHP Bug lost) is a simple one-file script for use in any php websites that offers a console for debug and monitoring on your broser. It's based on FirePHP and PHP Quick Profiler. You can send log messages to the console, view SQL Querys, memory usage, list of user and server vars, files included, automatic detection of ajax request (like FireBug)... etc. Also PBL can send emails to the admin when a sql query fail or the app are using more memory or time that allowed. You can configure this. PBL don't have dependencies. It automatically generate all the HTML, JS and CSS code for show the console on your browser.

This debugger for PHP gives you the ability to inspect and understand what is going on in your application.

This is a simple, modular PHP class designed to record execution time benchmarks throughout different parts of a script. Compatible with virtually any PHP script, the code can be added/removed quickly and with ease. Accurate to the microsecond.

Denwer is a collection of often-used web-servers for web-programmers. It is used to debug web-sites under Win32. Denwer includes: friendly installer; Apache; PHP; MySQL; Perl; virtual host management system; phpMyAdmin; sendmail stub; start/stop manager.

Gubed PHP Debugger is a program to debug PHP scripts. It currently supports stepping through code, watching contents of variables and setting breakpoints (line and conditional). No changes are needed to server software or scripts being debugged.

Interactive PHP shell Create an interactive environment to debug php line by line. It enables you to execute php code as if it were a command line in a similar setting to bash and psh (perl shell).

PHP class for developing with MySQL. Includes logging, debugging and query dump features.

DBG is a full-featured PHP Debugger and Profiler. Makes it easier to find problems or bugs in PHP scripts. DBG supports back-tracking, watching variables, viewing arguments passed to all nested function calls at any point of execution. Opensource.

PHPDebugger is used for debugging PHP scripts.It can debug PHP scripts on local as well as remote servers. The Just In Time (JIT) gives the power to debug an entire web application through a Web Server.It has Inbuilt Profiler functionality.

PHP_Dyn is PHP Extension to help debugging a PHP script. You can get execution trace of scripts not to need change them. HTTP request parameter can be printed. Argument value of the function call and return value can be printed.

Creates a function calls debug trace. Functions arguments, returned parameters and watched variables are reported in the same section. Traced variables can be processed by provided user functions for displaying purposes.

Smart Feedback is a simple utility to help developers get feedback on their products An application feedback form and a Delphi Component Editor are provided Simple to use, small in size, big on purpose. Supports sourceforge.net/tracker

Unus is a framework that gives developers a powerful, simple to use tool, with many advanced features that are seen in enterprise level applications.

Ve-EDIT is a webbased sourcecode editor. It has syntax highlighting, a debugger (PHP, XML) , FTP & CVS client and more.....

Visual DB Script is an editor PHP,ASP,HTML(can support other languages) that integrate the functionally of a Database Manager (like Access or MySQL). It supports Scripting Developers with specifical SQL commands and an SQL Query Designer

XPHP is an IDE authoring tool for Windows that allows you to design, develop, test, debug and deploy PHP applications. [This project has been discontinued since 2005]

Zinc allows PHP developers to better debug and optimise their applications by providing detailed information on the execution path of the code in their scripts.

openDebug is a simple PHP debugger for use in small websites. openDebug will generate extra HTML/Javascript code which 'attaches' to the HTML output. Then the coder can look up his variables, queries and check for errors.

Small PHP library to view (1) all the executed MYSQL queries and their result (read data, affected rows, errors and their reason) and (2) all received GET and POST variables. This library makes it very fast to find why queries did not work as expected.

phpWhistleBlower is a framework to help php developers to write tests that validate their project codebases, helping to improve the developement process and overall code quality.

Provide a testing framework for PHP, similar to JUnit for Java.