现在只返回一条数据，要返回符合条件的所有数据怎么弄？
if(!defined('SC')){exit('Access Denied');}
$db = functions::db();
$uid = SC('post/uid');
$wid = $db->query('pinglun','',"user='{$uid}'");
if($wid){
$array = array(
'ret'=>true,
'id'=>$wid[0]['id'],
'zan'=>$wid[0]['zan']
);
}else{
$array = array(
'ret'=>false
);
}
echo json_encode($array);
