function wiki_backup_mods($bf, $preferences)
{
    global $CFG;
    $status = true;
    ////Iterate over wiki table
    if ($wikis = get_records("wiki", "course", $preferences->backup_course, "id")) {
        foreach ($wikis as $wiki) {
            if (backup_mod_selected($preferences, 'wiki', $wiki->id)) {
                wiki_backup_one_mod($bf, $preferences, $wiki);
            }
        }
    }
    return $status;
}
function wiki_backup_mods($bf, $preferences)
{
    $status = true;
    ////Iterate over wiki table
    $dfwikis = get_records('wiki', "course", $preferences->backup_course, "id");
    if ($dfwikis) {
        foreach ($dfwikis as $dfwiki) {
            if (backup_mod_selected($preferences, 'wiki', $dfwiki->id)) {
                $status = wiki_backup_one_mod($bf, $preferences, $dfwiki);
                // backup files happens in backup_one_mod now too.
            }
        }
    }
    return $status;
}