OVH.com is a french hosting provider.
If you do not have .ovhconfig
file into the root directory of your server, create it with this content:
app.engine=php app.engine.version=5.5 http.firewall=none environment=production
Read the ovh documentation for more explanations.
Add these lines to your .htaccess
to the root of you wiki install:
SetEnv PHP_VER 5_TEST SetEnv MAGIC_QUOTES 0