3v4l.org

run code in 300+ PHP versions simultaneously
<a class='but_add' href="<?=isset($_SESSION['user_id']) ? "addItem.php?add={$row['Product_ID']}" : "login.php" ?>"><i class='far fa-plus-square fa-s'></i>Add</a>
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
<a class='but_add' href="login.php"><i class='far fa-plus-square fa-s'></i>Add</a>
preferences:
76.24 ms | 1446 KiB | 4 Q