Warning: Undefined array key "userid" in /users/2019/i1919014/public_html/2022/WebDB/login.php on line 7

Warning: Undefined array key "password" in /users/2019/i1919014/public_html/2022/WebDB/login.php on line 8
SELECT no, userid FROM WHERE userid = '' AND password = md5('')

Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'WHERE userid = '' AND password = md5('')' at line 1 in /users/2019/i1919014/public_html/2022/WebDB/login.php:18 Stack trace: #0 /users/2019/i1919014/public_html/2022/WebDB/login.php(18): mysqli->query() #1 {main} thrown in /users/2019/i1919014/public_html/2022/WebDB/login.php on line 18