Как отключить автоматическую генерацию keywords?

function create_metatags($story) {
    global $config, $db;
    
    $keyword_count = 20;
    $newarr = array ();
    $headers = array ();
    $quotes = array ("\x22", "\x60", "\t", '\n', '\r', "\n", "\r", '\\', ",", ".", "/", "¬", "#", ";", ":", "@", "~", "[", "]", "{", "}", "=", "-", "+", ")", "(", "*", "^", "%", "$", "<", ">", "?", "!", '"');
    $fastquotes = array ("\x22", "\x60", "\t", "\n", "\r", '"', '\r', '\n', "$", "{", "}", "[", "]", "<", ">");

    $story = preg_replace( "#\[hide\](.+?)\[/hide\]#is", "", $story );
    $story = preg_replace( "'\[attachment=(.*?)\]'si", "", $story );
    $story = preg_replace( "'\[page=(.*?)\](.*?)\[/page\]'si", "", $story );
    $story = str_replace( "{PAGEBREAК}", "", $story ); // заменить K на английский K
    $story = str_replace( "&nbsp;", " ", $story );
    
    $story = str_replace( '<br />', ' ', $story );
    $story = strip_tags( $story );
    $story = preg_replace( "#&(.+?);#", "", $story );
    $story = trim(str_replace( " ,", "", $story ));
 
    if( trim( $_REQUEST['meta_title'] ) != "" ) {
        $headers['title'] = trim( htmlspecialchars( strip_tags( stripslashes($_REQUEST['meta_title'] ) ), ENT_COMPAT, $config['charset'] ) );
        $headers['title'] = $db->safesql(str_replace( $fastquotes, '', $headers['title'] ));
    } else $headers['title'] = "";
    
    if( trim( $_REQUEST['descr'] ) != "" ) {
        $headers['description'] = dle_substr( strip_tags( stripslashes( $_REQUEST['descr'] ) ), 0, 190, $config['charset'] );
        $headers['description'] = $db->safesql( str_replace( $fastquotes, '', $headers['description'] ));
    } elseif($config['create_metatags']) {
        $story = str_replace( $fastquotes, '', $story );
        $headers['description'] = $db->safesql( dle_substr( stripslashes($story), 0, 190, $config['charset'] ) );
    } else {
        $headers['description'] = '';
    }
    
    if( trim( $_REQUEST['keywords'] ) != "" ) {
        $headers['keywords'] = $db->safesql( str_replace( $fastquotes, " ", strip_tags( stripslashes( $_REQUEST['keywords'] ) ) ) );
    } elseif( $config['create_metatags'] ) {
        $story = str_replace( $quotes, ' ', $story );
        $arr   = explode( " ", $story );
        
        foreach ( $arr as $word ) {
            if( dle_strlen( $word, $config['charset'] ) > 4 ) $newarr[] = $word;
        }
        
        $arr = array_count_values( $newarr );
        arsort( $arr );
        
        $arr    = array_keys( $arr );
        $total  = count( $arr );
        $offset = 0;
        $arr    = array_slice( $arr, $offset, $keyword_count );
        
        $headers['keywords'] = $db->safesql( implode( ", ", $arr ) );
    } else {
        $headers['keywords'] = '';
    }
    
    return $headers;
}

showRow( $lang['opt_sys_nfut'], $lang['opt_sys_nfutd'], makeDropDown( array ("1" => $lang['opt_sys_yes'], "0" => $lang['opt_sys_no'] ), "save_con[news_future]", "{$config['news_future']}" ) );

showRow( "Автоматическое формирование метатегов 'description' и 'keywords' для публикаций", "Вы можете включить автоматическое заполнение метатегов 'description' и 'keywords' для публикаций. Если при добавлении публикаций на сайт данные поля не были заполнены, то скрипт автоматически создаст их.", makeDropDown( array ("1" => $lang['opt_sys_yes'], "0" => $lang['opt_sys_no'] ), "save_con[create_metatags]", "{$config['create_metatags']}" ) );