PHP返回JSON和XML类，返回jsonxml

PHP返回JSON和XML类，返回jsonxml

 1 php
 2     class Reponse{
 3         //private $result = array('code'=null,'message'=null,'data'=>null);
 4         /**
 5          * @desc 返回JSON格式
 6          * @param int $code 
 7          * @param string $message 
 8          * @param array  $data
 9          * return string
10          */
11         public static function json($code,$message = null,$data = array()){
12             if(!is_numeric($code)){
13                 return false;
14             }
15             $result = array(
16                 'code'=>$code,
17                 'message'=>$message,
18                 'data'=>$data
19             );
20             return json_encode($result);
21             exit;
22         }
23         
24         /**
25          * @desc 返回xml格式数据
26          * @parma int $code 状态码
27          * @param string $message 提示
28          * @param array $data 数据
29          * return string 
30          */
31          public static function xml($code,$message = '',$data = array()){
32             if(!is_numeric($code)){
33                 return false;
34             }
35             $result = array(
36                 'code'=>$code,
37                 'message'=>$message,
38                 'data'=>$data
39             );
40             $xml = '';
41             
42             $xml .= "\n";
43             $xml .= "\n";
44             $xml .= self::xmlEncode($result);
45             $xml .= "";
46             header("Content-Type:text/xml");
47             echo $xml;
48 
49          }
50          
51          public static function xmlEncode($result){
52             $xml = $attr ='';
53             foreach($result as $key=>$val){
54                 if(is_numeric($key)){
55                     $attr = "id='{$key}'";
56                     $key = "item{$key}";
57                 }
58                 $xml .= "$key