dedecms5.7织梦模板文章内容页如何调用关键词增加链接

{dede:field name='keywords' runphp='yes' }                    if(!empty(@me))                    {                        $kws = explode(',',@me);                        @me = "";                        foreach($kws as $k)                        {                           @me .= "<a href='/plus/search.php?keyword=".urlencode($k)."' target=_blank ><h2>$k</h2></a> ";                        }                         @me= str_replace(' ', ' ',trim(@me));                    } {/dede:field}