I'm working on a simple Content Management system and following a tutorial while customizing a bit of the code, I tried to find what i did wrong but couldn't find the problem.
Anyways here is my code for the a SQL connection. The fatal error occurs at $result = $mysqli->query($query);
Warning: Creating default object from empty value in C:\wamp\www\phptesting\includes\class-db.php on line 11
Notice: Undefined variable: mysqli in C:\wamp\www\phptesting\includes\class-db.php on line 15
Fatal error: Call to a member function query() on null in C:\wamp\www\phptesting\includes\class-db.php on line 15