3v4l.org

run code in 300+ PHP versions simultaneously
<?php if($_POST){ $username=$_POST['username']; $password=$_POST['password']; $sql=_query("select * from users where username='$username' and password='$password'"); $res=_num_rows($sql); if($res>0){ $rs_login=_fetch_assoc($sql); $uid=$rs_login['user_id']; $_['sess_uid']=$uid; echo "success"; }else{ echo "invalid username or password"; } }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
preferences:
241.67 ms | 406 KiB | 363 Q