doyocms后台单选字段前台单条件筛选

<style type="text/css">
		.pickind a{margin: 0 20px}
		.pickind a.on{color: red}
		</style>
		<div class="pickind" >
               <a href="javascript:;" class="a-t">类　别</a>
              {loop table="classtype" tid="$type["tid"]" as="t"}
                <a href="{$t['url']}" >所有</a>
                {/loop}
                <?php
                    $f=syDB('fields')->find(array('fields' => 'sx'),null,'selects');
                            foreach(explode(',',$f['selects']) as $v){
                              $s=explode('=',$v);
                              $bgq='';
                             $url='index.php?c=article&a=type&tid='.$_GET['tid'].'&sx='.$s[0];
                               if( $s[1]==$_GET['sx'] ){
                              $bgq=' class="on"';
                              }
                              echo '<a'.$bgq.' href="'.$url.'">'.$s[0].'</a>';
                            }
                    ?>
        </div>