ThinkPHP+Uploadify图片上传预览与缩略

控制文件内容：

1public function uploadimages(){
2        $date = date('Ymd');
3        $targetFolder = '../Uploads/'.$date.'/'; // Relative to the root
4        if(I('action')=='del'){//判断是否删除图片
5            $img = I('img');
6            if(in_array($img,$_SESSION['uploadimages'])){//检查提交的图片是否存在session
7                unset($_SESSION['uploadimages'][array_search($img,$_SESSION['uploadimages'])]);//删除对应的图片
8                unlink($targetFolder.'s_'.$img); 
9                unlink($targetFolder.'m_'.$img);
10                unlink($targetFolder.'b_'.$img);
11            }
12            foreach($_SESSION['uploadimages'] as $key => $value){
13                echo '<img src="'.$targetFolder.'m_'.$value.'" width="300" height="300" /><br />';
14                echo '<a href="javascript:void(0);" id="'.$value.'" class="mylink">删除</a><br />';
15
16
17            }
18            //session('uploadimages',NULL);
19        }else{
20            //上传图片
21            import("ORG.Net.UploadFile");
22            $upload = new UploadFile();
23            $upload->maxSize  = 10485760 ;
24            $upload->allowExts  = array('jpg', 'gif', 'png', 'jpeg');
25            $upload->savePath =  $targetFolder;
26            $upload->thumb = true;
27            $upload->thumbPrefix='s_,m_,b_';
28            $upload->thumbMaxWidth='200,300,620';
29            $upload->thumbMaxHeight='120,180,300';
30            $upload->thumbRemoveOrigin=true;
31            if(!$upload->upload()) {
32                echo $upload->getErrorMsg();
33            }else{
34                $info =  $upload->getUploadFileInfo();
35            }
36            $_SESSION['uploadimages'][] = $info[0]['savename'];//将图片放进session，并以数组形式保存
37            foreach($_SESSION['uploadimages'] as $key => $value){
38                echo '<img src="'.$targetFolder.'m_'.$value.'" width="300" height="300" /><br />';
39                echo '<a href="javascript:void(0);" id="'.$value.'" class="mylink">删除</a><br />';
40            }
41        }
42    }

前台HTML：

1<div class="control-group">
2      <label class="control-label" for="file_upload">图片：</label>
3      <div class="controls">
4      <input data-no-uniform="true" id="file_upload" type="file" name="file_upload" multiple />
5      <p>
6         <a href="javascript:$('#file_upload').uploadify('upload','*')" class="label label-success">确认上传</a>
7         <a href="javascript:$('#file_upload').uploadify('cancel','*')" class="label label-warning">重置上传队列</a>
8     </p>
9    <div id="uploadsuccess" style="display: none"></div>
10</div>

JS内容：

1$(document).ready(function() {
2        $('#file_upload').uploadify({
3            'removeCompleted' : false,
4            'auto'            : false,
5            'fileTypeExts'    : '*.gif;*.jpg;*.png',
6            'fileSizeLimit'   : 1024,
7            'swf'             : '__PLUGIN__/uploadify/uploadify.swf',
8            'uploader'        : '{:U("goods/uploadimages")}',
9            'onUploadSuccess' : function(file,data,response){
10                   $('#uploadsuccess').html(data).show();
11            }
12        });
13
14        $(document).on("click", "a.mylink", function(){
15            var img = $(this).attr('id');
16            if(confirm('确定要取消上传这张图片？')){
17                $.post("{:U('goods/uploadimages')}",{img:img,action:'del'},function(data){
18                    $('#uploadsuccess').html(data).show();
19                });
20            }
21        });
22    });
23
24上传队列： 在goods/add

上传预览效果：(上传到：goods/uploadimages)

一张图生成3张缩略图，怎么样把3张缩略图放在不同的文件夹下呢？

知道的请告知！