PDO::FETCH_OBJ -> Returns an anonymous object with property names that correspond to the column names returned in your result set. For example:
Array ( [0] =>
You should use something like the following:
foreach ($results as $row) { print_r($row->email); }
If you expect to have just one row returned, it is always a good idea to check that. You can use count() with your $results variable like this:
if (count($results)==1) { print_r($results[0]->email); }