An index.html was created in the public_html folder. That is, index.php wasn't call. Juste removing the index.html (temporary) solve the problem.
But, the next day, index.html respawn :/
I Edit the DirectoryIndex directive in httpd.conf, putting index.php first, this works (I restart httpd and remove index.html too)
But the next day, index.html respawn AND httpd.conf was modified: the DirectoryIndex was change to the initial value.
Is there an httpd.conf template ? And Where ?