PHP AdminForm::load_from_post示例

<?php

session_start();
if (isset($_SESSION['type'])) {
    if ($_SESSION['type'] != "Administrator") {
        header('Location: index.php');
    }
} else {
    header('Location: index.php');
}
include "models/admin_model.php";
$admins = new AdminForm();
$to_edit = new AdminForm();
if (isset($_POST['add_admin'])) {
    $to_edit->load_from_post();
    $valid = $to_edit->validate();
    if ($_POST['password2'] != $to_edit->fields['password']->value) {
        $valid = false;
    } else {
        $to_edit->fields['password']->hash_pass();
    }
    if ($valid) {
        $to_edit->save();
    }
} elseif (isset($_POST['admin_id'])) {
    $to_edit->load_by_pk($_POST['admin_id']);
    $to_edit->load_from_post();
    $valid = $to_edit->validate();
    if ($valid) {
        $to_edit->save();
        $to_edit = new AdminForm();