Debugging and Testing
Atrise PHP Script Debugger
BODY: The PHP Debugger
debugHelper
DzSoft PHP Editor
Expert Debugger
Lensdebug
Marc's PHP Debugger
PHP, HTML and Java Test Board
phpEval()
PHP_Debug
PHP_Dyn - PHP Dynamic Script Tracer
Simple Test for PHP
tableVarDump
tableVarDump()
Tesly
Variable Validator