if(!function_exists('get_paging_bt4')){
    function get_paging_bt4($write_pages, $cur_page, $total_page, $url, $add="")
    {
        //$url = preg_replace('#&page=[0-9]*(&page=)$#', '$1', $url);
        $url = preg_replace('#(&)?page=[0-9]*#', '', $url);
        $url .= substr($url, -1) === '?' ? 'page=' : '&page=';


        $str = '';
        if ($cur_page > 1) {
            $str .= '<li class="page-item"><a href="'.$url.'1'.$add.'" class="page-link">처음</a></li>'.PHP_EOL;
        }

        $start_page = ( ( (int)( ($cur_page - 1 ) / $write_pages ) ) * $write_pages ) + 1;
        $end_page = $start_page + $write_pages - 1;

        if ($end_page >= $total_page) $end_page = $total_page;

        if ($start_page > 1) $str .= '<li class="page-item"><a href="'.$url.($start_page-1).$add.'" class="page-link">이전</a></li>'.PHP_EOL;

        if ($total_page > 1) {
            for ($k=$start_page;$k<=$end_page;$k++) {
                if ($cur_page != $k)
                    $str .= '<li class="page-item"><a href="'.$url.$k.$add.'" class="page-link">'.$k.'<span class="sound_only">페이지</span></a></li>'.PHP_EOL;
                else
                    $str .= '<li class="page-item active"><a href="javascript:;" class="page-link">'.$k.'<span class="sound_only">페이지</span></a></li>'.PHP_EOL;
            }
        }

        if ($total_page > $end_page) $str .= '<li class="page-item"><a href="'.$url.($end_page+1).$add.'" class="page-link">다음</a></li>'.PHP_EOL;

        if ($cur_page < $total_page) {
            $str .= '<li class="page-item"><a href="'.$url.$total_page.$add.'" class="page-link">맨끝</a></li>'.PHP_EOL;
        }

        if ($str)
            return "<nav><ul class=\"pagination justify-content-start\">{$str}</ul></nav>";
        else
            return "";
    }
}