//validation form data $id = $_POST['id']; $product = Product::showEditProduct($id); //We get a product that will edit $product_info = array(); //an array of product characteristics while ($res = mysqli_fetch_assoc($product)) { $product_info[] = $res; //fill an array of product characteristics } echo json_encode($product_info); //response to Ajax (send product characteristics to JavaScript ) } if (isset($_POST['edit_id'])) { //Conditions to EDIT product in Database $_POST = trimAll($_POST); //validation form data $_POST = htmlAll($_POST); //validation form data $edit_id = $_POST['edit_id']; $edit_code = $_POST['edit_code']; $edit_name = $_POST['edit_name']; $edit_price = $_POST['edit_price']; $product_edit = Product::editProduct($edit_id, $edit_code, $edit_name, $edit_price); //edit product in Database if ($product_edit == TRUE) { echo 'Product successfully edited'; } else { echo 'Please try again'; } }