BuddyPress.org

The following code works for me:

function automatic_group_membership( $user_id ) {
if( ! $user_id ) {
return false;
}

groups_invite_user( array( 'user_id' => $user_id, 'group_id' => $group_id ) );
}
add_action( 'bp_core_activated_user', 'automatic_group_membership' );
add_action( 'user_register', 'automatic_group_membership'…[Read more]