if ($result=$this->mysqli->prepare('SELECT "'.$user[email].'","'.$user[pass].'" FROM `table` WHERE `id`=?'))
{
$result->bind_param("i",$this->id);
$result->execute();
$result->bind_result($usE,$usP);
$result->fetch();
$result->close();
}
var_dump($usE,$usP);
в итоге выводится