A host of other development environments is available for the professional PHP developer. Some are more useful than others, depending on what you want to use them for. For example, PHPEdit, for Windows, offers a bunch of useful editing tools as well as a debugger. It is available for download free of charge at http://www.waterproof.fr/products/PHPEdit. Very briefly, some of its main features are as follows:
Syntax Highlighting
Code Hint, Code Insight
Integrated PHP debugger
Help Generator
Customizable shortcuts
More than 100 scriptable commands
Keyboard templates
To-do report generator
QuickMarks
Plug-ins
Here are some other IDEs and editors you may want to take a look at:
PHPEclipse: http://www.phpeclipse.de/tiki-view_articles.php
EditPlus: http://www.editplus.com/
NuSpherePHPEd: http://www.nusphere.com/products/index.htm
PHPCode: http://www.phpide.de/
This ends our brief discourse on PHP-based IDEs. Of course, simply because we haven't covered all the options available doesn't mean that they aren't worth looking at. For example, NuSphere's PHPEd provides tons of advanced features such as code completion, debugging, profiling, and deployment facilities, among other things. As an IDE, it has received some acclaim and is well worth looking over.