PHP 5 -> 4 converter

I have wrote tool for automatic convert PHP5 scripts to PHP4. It converts new PHP 5 object model features and language constructions into PHP 4 equivalents. This tool may be useful, if you need transfer PHP5 scripts to run under previous version. It is not designated to provides missing functionality (try PHP_Compat), just missing syntax.

Supported are these constructions:

• abstract classes and methods (demo)
• interface, implements (demo)
• new constructor syntax __construct (demo)
• final classes and method
• visibility modifiers public, protected, private (demo)
• static attributes and methods (demo)
• class constants (demo)
• object clonning (demo)
• operator instanceof
• self::
• automatic passing objects as references (see How to emulate PHP5's object model in PHP4)
• type hinting
• support for Doc Comments
• and for exceptions try, throw, catch (it is not full-value replacement, only partial emulation)

Try it here.