Warning: Undefined variable $submenu in /customers/6/1/8/secelle.be/httpd.www/diederik/index.php on line 5

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /customers/6/1/8/secelle.be/httpd.www/diederik/database/connection.php:7
Stack trace:
#0 /customers/6/1/8/secelle.be/httpd.www/diederik/index.php(8): include_once()
#1 {main}
  thrown in /customers/6/1/8/secelle.be/httpd.www/diederik/database/connection.php on line 7