Upgrading & fixing PHP/mysql...

Hi all, this is my first post to this group... I'm working on an intranet, (rewriting an old unusable one) and I'm having problems with PHP using mysql. I get an "undefined function mysql_connect()" error when trying to use phpmyadmin. PHP's configure option says: "--with-mysql=shared", "--with-apxs" The system admin just reinstalled mysql, I realise I need to reinstall PHP again (would be good to upgrade). Can I get away with just upgrading PHP, without recompiling apache? I need some basic help because the sysadmin and I are not particularly strong in LINUX, also I want to be able to do this myself oneday... Thanks for any help Andrew "My ass may be dumb, but I ain't no dumbass" - Someone (I forget).