//update book $book['bid'] = $_POST['bid']; $book['isbn'] = $_POST['isbn']; $book['class'] = $_POST['class']; $book['location'] = $_POST['location']; $book['title'] = $_POST['title']; $book['authors'] = $_POST['authors']; $book['edition'] = $_POST['edition']; $book['publisher'] = $_POST['publisher']; $book['published_year'] = $_POST['published_year']; $book['subjects'] = $_POST['subjects']; $book['lang'] = $_POST['lang']; $book['series'] = $_POST['series']; $book['pages'] = $_POST['pages']; $bks->updateBook($book); } } // DELETE Book if(isset($_POST['BtnDeleteBook'])){ $bid = $_POST['bid']; $book = $bks->getBookByID($bid); $bks->deleteBook($book); } // Update book ///////////////////////////////////////////////////// if(isset($_POST['BtnUpdateBook'])){ $book['bid'] = $_POST['bid']; $book['isbn'] = $_POST['isbn'];