| My contribution, a script to convert phpbb users, forums, topics and posts to minibb. This script assumes your phpbb database name is PHPBB, your minibb table names are prefixed with minibb_* and the phpbb tables have phpbb_* prefix. Adjust where necessary. You will have to clear the minibb_users table if you run this script more than once.
 # phpBB 2.0 to miniBB 2.0 Converter
 # Copyright (C) 2005 Monte Ohrt
 #
 # Purpose:
 #
 # The script will transfer categories, forums, users, and posts
 # from phpBB 2.0 to miniBB 2.0.
 #
 # Prerequisites:
 #
 # - phpBB 2.0 and miniBB 2.0 dbs are installed on the same server
 # - miniBB 2.0 is empty, fresh install
 # - phpBB 2.0 tables are prefixed with "phpbb_"
 # - miniBB 2.0 tables are prefixed with "minibb_"
 #
 # Directions:
 #
 # mysql minibb < phpbb2minibb.sql
 #
 
 # Clear out minibb tables
 
 TRUNCATE TABLE minibb_forums;
 TRUNCATE TABLE minibb_posts;
 TRUNCATE TABLE minibb_topics;
 
 # No categories in miniBB, skip.
 
 #
 # Copy forums.
 #
 
 INSERT INTO minibb_forums (forum_id, forum_name, forum_desc, forum_order, forum_icon, topics_count, posts_count)
 SELECT forum_id, forum_name, forum_desc, forum_order, 'default.gif', forum_topics, forum_posts
 FROM PHPBB.phpbb_forums;
 
 #
 # Copy users.
 #
 
 INSERT INTO minibb_users (user_id, username, user_regdate, user_password,
 user_email, user_icq, user_website, user_occ, user_from, user_interest,
 user_viewemail, user_sorttopics, user_newpwdkey, user_newpasswd, language, activity)
 SELECT user_id, username, FROM_UNIXTIME(user_regdate), user_password, user_email, user_icq,
 user_website, user_occ, '', user_interests, user_viewemail, 1, '', '', user_lang, 1
 FROM PHPBB.phpbb_users;
 
 # No security access in minibb, skip.
 
 #
 # Copy topics.
 #
 
 INSERT INTO minibb_topics (topic_id, topic_title, topic_poster,
 topic_poster_name, topic_time, topic_views, forum_id, topic_status,
 topic_last_post_id, posts_count, sticky)
 SELECT DISTINCT topic_id, topic_title, topic_poster,
 '', FROM_UNIXTIME(topic_time), topic_views, forum_id, topic_status, topic_last_post_id,0,0
 FROM PHPBB.phpbb_topics;
 
 # get poster name
 update minibb_topics, minibb_users set minibb_topics.topic_poster_name =
 minibb_users.username where minibb_topics.topic_poster =
 minibb_users.user_id;
 
 # calculate post count for each topic
 
 create table tmp_post_count (topic_id int, post_count int);
 insert into tmp_post_count select p.topic_id, count(p.post_id) from PHPBB.phpbb_posts p group by p.topic_id;
 
 update minibb_topics, tmp_post_count set minibb_topics.posts_count =
 tmp_post_count.post_count where minibb_topics.topic_id =
 tmp_post_count.topic_id;
 
 drop table tmp_post_count;
 
 # Copy posts.
 
 INSERT INTO minibb_posts (post_id, forum_id, topic_id, poster_id, poster_name,
 post_text, post_time, poster_ip, post_status)
 SELECT DISTINCT p.post_id, p.forum_id, p.topic_id, p.poster_id, '',
 '', FROM_UNIXTIME(p.post_time), poster_ip, 0
 FROM PHPBB.phpbb_posts p;
 
 # get poster name
 update minibb_posts, minibb_users set minibb_posts.poster_name =
 minibb_users.username where minibb_posts.poster_id =
 minibb_users.user_id;
 
 
 # Copy post text.
 
 update minibb_posts, PHPBB.phpbb_posts_text set minibb_posts.post_text =
 PHPBB.phpbb_posts_text.post_text where minibb_posts.post_id =
 PHPBB.phpbb_post_text.post_id;
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