Multiple versions of PHP installed
 

I need to install PHP 5.1.4 on a server, but we also need to have an older version of PHP installed for some older software. This is just a testing server so we need to run newer and older systems on the machine that require different versions of PHP. So my question is, is this possible or not, and if possible what things do I need to watch out for?

Thanks

HA!! I suck! I found the answer on the PHP website...of all the places, whodathunk it woulda been there?

In the event that any of you need to know, the answer is yes, just read the documentation.

That's my PSA for the day. :)

Yeah, I was going to say "of course you can run multiple versions of PHP on your system. Just go read the documentation."

The reason is that there are quite a few differences in PHP5 and PHP4 that make it to where it would break scripts if switching directly to 5. They actually recommend running multiple versions until you get all of your quirks ironed out. Too, you can have some scripts call 5 and some scripts call 4. It all depends on your system resources too though, and you have to keep those in mind while using it on a production system.