class Member_model extends CI_Model {
 function __construct() {
  parent::__construct();  
 }

 function getChkUserEmail($email) {
  $query = $this->db->get_where('member', array('member_email' => $email));  
        $cnt = $query->num_rows();
  if($cnt == $email) {
   return false;
  }else {
   return true;
  }
 }
}