Agreed Ray .php certainly should be there.
Strange part is there were 13 pages in all, that had the php extension missing.
The .php is there now.
Later another error message popped at the top of the index page
Warning: mysqli_error() expects exactly 1 parameter, 0 given in /homepages/37/d415519235/htdocs/boatsforsalenow/Connections/conn1_i.php on line 8