WordPress.org

A bit about Database configuration.

If wordpress & phpBB share a DB already then set $PHPBBDB to DB_NAME and everything will be fine, else you.re going to need to GRANT the wordpress user read access to phpBB. (If you really need to, you can store the phpbb databse credential in the plugin using the "Insecure" connectivity method.)

How to GRANT wordpress read only access to phpBB ?

If you don.t know it already you need to find your wordpress mysql user id, it.ll be in wp-config.php

define('DB_USER', 'wp_user');     // Your MySQL username

and you should have already found your phpbb database & table for the above. You need to type the following syntax into your mysql database

GRANT SELECT ON phpbb_database.phpbb_topics TO wp_user@localhost;

AND

GRANT SELECT ON phpbb_database.phpbb_forums TO wp_user@localhost;

this can be achieved by logging into phpmyadmin as your phpbb user, selecting SQL and pasting the correct GRANT into the text box.

How to use the Insecure Database Connectivity Method

From the phpbbrecenttopics admin / settings page, tick the .Enable Insecure Database Connection. box, and submit, when the page re-freshes you.ll have some more boxes to populate, from your phpbb config.php fill in

$dbuser = phpbb MySQL Database UserName
$dbpasswd = phpbb MySQL Database Password
$dbhost = phpbb MySQL Server

Click update, and you should be connected!