Upgrading PHP & Mysql

Hello.
I have a VPS holding 20 domains, many of them using MySQL. I have Mysql
4.1 & php4.

If I upgrade to php5 & mysql5 will some pages stop functioning? I use
simple staff like $_POST , $_SESSION, serialize and some file system calls.

Most of my DBs are UTF8.

It's critical not to reprogram many things.

thanks

Harris Kosmidhs wrote:

> I have a VPS holding 20 domains, many of them using MySQL. I have Mysql
> 4.1 & php4.
>
> If I upgrade to php5 & mysql5 will some pages stop functioning? I use
> simple staff like $_POST , $_SESSION, serialize and some file system
> calls.
>

Hard to say.

If you use objects, then ...probably it will break a lot of stuff.
Otherwise, it probably won't.

Make sure you've got error logging licked before trying upgrading the live
box (and test it all first of course).

C.

Harris Kosmidhs wrote:
> Hello.
> I have a VPS holding 20 domains, many of them using MySQL. I have Mysql
> 4.1 & php4.
>
> If I upgrade to php5 & mysql5 will some pages stop functioning? I use
> simple staff like $_POST , $_SESSION, serialize and some file system calls.
>
> Most of my DBs are UTF8.
>
> It's critical not to reprogram many things.
>
> thanks

Why fix what ain't broken?

Or are there v5 (PHP & mySQL) features that you are after?

If you are really that keen than maybe you should get a new "box" for
the v5 stuff and migrate. That way if anything breaks you still have the
v4 stuff alive and well!