！php+ajax+ json 有关问题

<br />
function gtou($s) { return iconv('gbk', 'utf-8', $s); }<br />
$proquery ="select * from pro where typeid='".$id."' order by corank asc";<br />
 $dsql->SetQuery($proquery); <br />
$dsql->Execute(); <br />
$a=array();<br />
 while($row = $dsql->GetArray())<br />
 {<br />
 $a[]= array_map('gtou', $row); <br />
} <br />
$res = array(<br />
 "status" => "1",<br />
 "result" => $a,<br />
 "moreUrl" => $moreurl, );<br />
 echo json_encode($res);<br />