gistfile1.txt

class Contact_Model extends Model
{
    public function read_contact($contact_id)
    {
        
        if(is_numeric($contact_id))
        {
            $db = new Database;
        
            $query = $db->query("
                select
                    id,
                    firstname,
                    lastname,
                    phone,
                    email
                from
                    contacts
                where
                    id = $contact_id
            ");
        }
        else throw new Exception('Not a valid contact ID');
        
        if($query->count())
        {
            return $query->current();
        }
        else throw new Exception('Contact not found.');
    }