<?php session_start(); include 'student.php'; $student = new Student($_SESSION['username']); $op = $_GET['op']; if ($op == "return") { $student->return_book($_GET['copyId']); } else { if ($op == "borrow") { $lib = new Library(); $copyId = $lib->get_copyID_from_title($_GET['title']); if (is_null($copyId)) { exit("Found None"); } $lib->borrowBook($_SESSION['username'], $copyId); echo "The book is borrowed"; } else { if ($op == "shelves") { $lib = new Library(); $html = $lib->get_shelves_tableview('student'); echo $html; } else { if ($op == "details") { } } } }