Where Do I Enter My Database Login In Php

you need to set it up on these lines;

$hostname = "localhost"; // usually is localhost, but if not sure, check with your hosting company, if you are with webune leave as localhost
$db_user = "username"; // change to your database password
$db_password = "passwd"; // change to your database password
$database = "databse"; // provide your database name
$db_table = "user_info"; // leave this as is