This is the code
if(md5($admin['username'].$pwd) != $admin['password'])
{
exit(json_encode(array('code' => 1,'msg' => 'Wrong password')));
}
After commenting, the login was successful
小明同学ROCK2018-03-02 02:48:55
The encrypted content may be inconsistent with the content or number of digits of the password saved in the database.