부트스트랩 사용 시 페이징 채택완료

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

get_paging함수 대신 위 함수를 써보세요