$action = isset($_GET['action']) ? $_GET['action'] : ''; switch ($action) { // Add admin_user case 'add': if (!empty($_POST)) { $data = $_POST; $admin_users_model = new AdminUsersModel(); $admin_users_model->setCond('user = "******"'); $check = $admin_users_model->load(); if (empty($check)) { $data['password'] = md5($data['password']); $fields = array('user', 'password'); $admin_users_model = new AdminUsersModel(); $admin_users_model->setData($data); $admin_users_model->setFields($fields); $admin_users_model->insert(); $message = 'success_add'; } else { $message = 'user_exists'; } header('location: admin_users.php?message=' . $message); exit; } else { ?> <form method="post" name="add_admin_user" action="?action=add"> <div class="block_field"> <label for="user">User<label> <input type="text" name="user" id="user" size="30" /> </div> <div class="block_field">