Warning: Undefined array key "userid" in /users/2019/i1919003/public_html/2022/WebDB/join.php on line 2

Warning: Undefined array key "password" in /users/2019/i1919003/public_html/2022/WebDB/join.php on line 3

Warning: Undefined array key "username" in /users/2019/i1919003/public_html/2022/WebDB/join.php on line 4

Warning: Undefined array key "email" in /users/2019/i1919003/public_html/2022/WebDB/join.php on line 5

Warning: Undefined array key "phone" in /users/2019/i1919003/public_html/2022/WebDB/join.php on line 6
INSERT INTO `book_members` (`userid`,`password`,`username`,`email`,`phone`) VALUES ('',md5(''),'','','');
Fatal error: Uncaught mysqli_sql_exception: Duplicate entry '' for key 'userid' in /users/2019/i1919003/public_html/2022/WebDB/join.php:18 Stack trace: #0 /users/2019/i1919003/public_html/2022/WebDB/join.php(18): mysqli_query() #1 {main} thrown in /users/2019/i1919003/public_html/2022/WebDB/join.php on line 18