Php 3.0 to 4.0

[Anon]

I have a linux box (Redhat 6.2) with Php 4.0, MySQL, and Apache. I recently pulled down phpMyAdmin to toy around with. The index file it uses has a .php3 ending. Is Php 4.0 not backward compatible with Php 3? I tried changing the ending to .php only, but I still just receive the basic code rather than having it parsed. Do I have to install 3.0 to use those files.

Thanks,

Paul

[Anon]

It's just a matter of configurating you Apache "httpd.conf" file.
Just make sure you have these two lines in there:

AddType application/x-httpd-php .php
AddType application/x-httpd-php .php3