redhat 6.2 packaged with php3. so i think if you just want to run apache+php4, and don't want to be meshed up with setting some rpm, and some are not, why don't you upgrade to redhat 7.0 or 7.1. it include php4 engine 'off the shelf'.

i currently am running redhat 7.0 and without problem running php4 script 'off the shelf'. if you're maintaining php3 files, you still can run it, but it's better to change extension '.php3' to 'php' only.

qodoc