Well.... At least from that potential vulnerability.

You should also do a few other things, like maybe running php_suexec, but not every machine is the same. If you are running certain software, some easy fixes will break other things. As an example, you can't run MMCache, certain image gallery programs, etc., with php_suexec because it forces PHP to run as a CGI binary.

This would be a good discussion to have with one of the more knowledgeable admins at your host or NOC. Ask about basic stuff like basic server hardening and making sure that visitors can't inject things into your PHP forms and results. This is pretty 101 stuff from the admin end, so it shouldn't be a hard thing for them to help out with.

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:not_the_usual1
[you decide]
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All in my opinion, which, when combined carefully with a $1 bill, gets you a cup of coffee at the corner store.