<input type="text" name="cat" value=<?php echo $categories['id']; ?> hidden> </div> <button type="submit" name="choose" id="btn" value="addSCat" class="btn btn-default">Submit</button> <script src="assets/js/jquery-1.10.2.js"></script> <script type="text/javascript" src="CetegoriesValidation.js"></script> <?php if (isset($_POST['choose'])) { if ($_POST['choose'] == "addSCat") { $categors = new categories(); $categors->name = $_POST['sub']; $categors->parent = $_POST['cat']; $cats = $categors->insertSubCat(); } } ?> </form> </div> </div> </div> <!-- /. ROW --> </div> <!-- /. PAGE INNER --> </div> <!-- /. PAGE WRAPPER --> </div>