php 上传图片

 1     /**
 2     *上传图片
 3     */
 4     function showUpload_img($_FILES){
 5 
 6         $url_img=realpath(dirname(__FILE__).‘/../../‘.‘/wx_chat/img/‘).‘/‘;
 7        
 8         if ($_FILES["img_name"]["type"] == "image/gif"||$_FILES["img_name"]["type"] == "image/png"||$_FILES["img_name"]["type"] == "image/jpeg")
 9         {
10           if ($_FILES["img_name"]["error"] > 0)
11           {
12                
13                 return  array(
14                    ‘name‘=>‘‘,
15                    ‘status‘=>0,
16                    ‘info‘=>‘上传图片失败!‘.$_FILES["img_name"]["error"]
17                  );
18           }
19           else
20           { 
21             if (file_exists($url_img . $_FILES["img_name"]["name"]))
22             {
23                 return  array(
24                    ‘name‘=>$_FILES["img_name"]["name"],
25                    ‘status‘=>0,
26                    ‘info‘=>$_FILES["img_name"]["name"].‘已经存在,上传失败!‘
27                  );
28             }
29             else
30             {
31                move_uploaded_file($_FILES["img_name"]["tmp_name"],
32                $url_img . $_FILES["img_name"]["name"]);
33                return  array(
34                   ‘name‘=>$_FILES["img_name"]["name"],
35                   ‘status‘=>1,
36                   ‘info‘=>‘上传成功!‘
37 
38                    );
39             }
40           }
41         }else
42         {
43             return  array(
44                   ‘name‘=>"",
45                   ‘status‘=>0,
46                   ‘info‘=>‘图片格式不对！‘
47             );
48         }
49     }