<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>