private function create_student($row)
{
$obj = new student();
$obj->setstudentId($row["student_Id"]);
$obj->setFirstName($row["FirstName"]);
$obj->setLastName($row["LastName"]);
$obj->setDob(new \DateTime($row["dob"]));
$obj->setGender($row["gender"]);
$obj->setUsername($row["UserName"]);
$obj->setPassword($row["password"]);
$obj->setapproved($row["approved"]);
return $obj;
}