ok, the existing function is
function bbp_get_topic_post_date( $topic_id = 0, $humanize = false, $gmt = false ) {
$topic_id = bbp_get_topic_id( $topic_id );
// 4 days, 4 hours ago
if ( !empty( $humanize ) ) {
$gmt_s = !empty( $gmt ) ? 'U' : 'G';
$date = get_post_time( $gmt_s, $gmt, $topic_id );
$time = false; // For filter below
$result = bbp_get_time_since( $date );
// August 4, 2012 at 2:37 pm
} else {
$date = get_post_time( get_option( 'date_format' ), $gmt, $topic_id, true );
$time = get_post_time( get_option( 'time_format' ), $gmt, $topic_id, true );
$result = sprintf( _x( '%1$s at %2$s', 'date at time', 'bbpress' ), $date, $time );
}
return apply_filters( 'bbp_get_topic_post_date', $result, $topic_id, $humanize, $gmt, $date, $time );
}
so we can filter this as follows :
add_filter ('bbp_get_topic_post_date' , 'rew_date' , 10 , 6) ;
function rew_date ($result, $topic_id, $humanize, $gmt, $date, $time) {
$result = 'hello' ;
return $result ;
}
This should then say ‘hello’ so all we want to do is change $result to read whatever you want – so what do you want it to say ?