$student->school_considered_id = $schoolConsidered->id;
    $student->sti_discovery_id = $discovery->id;
    $student->enrollment_detail_id = $enrollmentDetail->id;
    $student->appointment_detail_id = $appointmentDetail->id;
    $student->create();
    //----------------------------------------------------------------------------------------------------------------------------------//
    $appointmentDetail->studentid = $student->id;
    $appointmentDetail->update();
    $enrollmentDetail->studentid = $student->id;
    $enrollmentDetail->update();
    $discovery->studentid = $student->id;
    $discovery->update();
    $schoolConsidered->studentid = $student->id;
    $schoolConsidered->update();
    $inquiry->studentid = $student->id;
    $inquiry->update();
    $schoolLastAttended->studentid = $student->id;
    $schoolLastAttended->update();
    $personInfo->studentid = $student->id;
    $personInfo->update();
    //----------------------------------------------------------------------------------------------------------------------------------//
} else {
    if ($_POST['oper'] == 'edit') {
        $student = Student::get_by_id($_POST['id']);
        $student->studentid = $_POST['studentid'];
        $student->datetime = time();
        $student->update();
        //----------------------------------------------------------------------------------------------------------------------------------//
        $personInfo = PersonalInformation::get_by_id($student->personal_information_id);
        $personInfo->firstname = $_POST['a_firstname'];
        $personInfo->lastname = $_POST['a_lastname'];