[Michael Adams (mdawaffe)]

The easy way is to find get_thread( $topic_id, $page ) in /topic.php and change it to get_thread( $topic_id, $page, true ).

The better way is to use a plugin so that you aren’t modifying any core files. (This is untested)

<?php

/*

Plugin Name: Reverse Post Order

Plugin URI: https://bbpress.org/forums/topic/76

*/

function reverse_post_order() {

global $topic_id, $page, $topic, $bb_current_user;

global $bb_db_override, $posts, $forum, $tags, $user_tags, $other_tags, $list_start;

$bb_db_override = true;

$posts = get_thread( $topic_id, $page );

$forum = get_forum ( $topic->forum_id );

$tags = get_topic_tags ( $topic_id );

if ( $bb_current_user && $tags ) {

$user_tags = get_user_tags ( $topic_id, $bb_current_user->ID );

$other_tags = get_other_tags ( $topic_id, $bb_current_user->ID );

} elseif ( is_array($tags) ) {

$user_tags = false;

$other_tags = get_public_tags( $topic_id );

} else {

$user_tags = false;

$other_tags = false;

}

$list_start = ($page – 1) * bb_get_option(‘page_topics’) + 1;

post_author_cache($posts);

}

add_action( ‘bb_topic.php_pre_db’, ‘reverse_post_order’ );

?>