<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
 $(document).ready(function(){
  $.getJSON("a.php",{id:1, name:encodeURI('李智'), gender:encodeURI('男')},function(json){
     var json=eval(json);
     var html = '<select>'
          html += '<option value="' +json['id']+'">'+decodeURI(json['name'])+'</option>';
     html += '</select>';
     html += '<span>'+json['gender']+'</span>';
     $('#aa').html(html);
  });
 });
</script>
<div id="aa"></div>

<?php
/*
write by lizhi
2009-10-26
*/
 $id = $_GET['id'];
 $name = $_GET['name'];
 $gender = $_GET['gender'];
 $arr2 = array("id"=>$id, "name"=>urldecode($name), "gender"=>urldecode($gender));
 echo json_encode($arr2);
?>

<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
 $(document).ready(function(){
  $.getJSON("a.php",{id:1, name:'admin', gender:'男'},function(json){
     var json=eval(json);
     var html = '<select>'
     $.each(json, function(k) 
          {
            html += '<option value="' +json[k]['id']+'">'+decodeURI(json[k]['name'])+'</option>'; 
          });
     html += '</select>'
     $('#aa').html(html);
  });
 });
</script>
<div id="aa"></div>

<!--利用jquery返回json数组，返回的为二维数组，所以需要遍历输出
未解决：中文传递问题-->

<?php
/*
 write by lizhi 
 2009-10-26
*/
$json = array ( 
 0 => 
 array ( 
  'id' => '13', 
  'name' => 'lizhi', 
 ), 
 1 => 
 array ( 
  'id' => '17', 
  'name' => 'admin', 
 )
 );
echo json_encode($json);
?>