---- Can I run multiple versions of PHP on Apache?
lucy24 - 9:00 am on Jul 18, 2013 (gmt 0)
The company that developed a CMS for me on this server cannot guarantee that it will work on newer versions of PHP.
Can you pin them down to any details? php is not the most backward-compatible language in the world, so at bottom we're talking about specific commands or functions that may no longer work. This is already a warning sign, because generally when something is deprecated-- in any environment-- it's because there is something wrong with it. Or, at least, that the alternatives are so much better that they're trying to sweep the old version under the rug.
See if you can back your developers into a corner and find out (a) what, exactly, might no longer work as intended and (b) why it can't be changed to something that does still work.