One of the benefits of upgrading from PHP 3 to PHP 4 is an Improved syntax highlighter
Scroll down to see the answer
Comments
Submitted by : Eduard Pascual on : Monday, June 4th 2007 23:28
WTF?? PHP is just a language, and the parser / interpreter for it. The parser does not highlight syntax, no matter which version are you using. IDEs and editors will apply syntax highlighting, but this will depend on the editor itself, and not at all on the version of PHP being used (actually, most editors won't even "know" which version of PHP is that code).
Submitted by : Boaz Yahav on : Tuesday, June 5th 2007 20:52
http://www.zend.com/zend/whats-new.php, notice the list.
I'm guessing that this question is not really relevant anymore... maybe it should be changed to
something more relevant like php4 and php5...
PHP General