Fatal error: Call to undefined method CI_DB_mysql_driver::row()?

[eluser]TaylorOtwell[/eluser]
It doesn't look like you're calling the "get()" method in your "check_email()" function, so the query you are defining is never actually executing.

Try this:

Code:

$query = $this->db->select('email')->where('email', $this->input->post('email'))->get();