DataReturn.class.php类文件如下：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 <?php  /** 返回数据格式化类  *  Date:  2011-08-15  *  Author: fdipzone  */      class DataReturn{  // class start        private $type;    private $xmlroot;    private $callback;    private $returnData;        public function __construct($param=array()){      $this->type = $this->exists($param,'type')? strtoupper($param['type']) : 'JSON';   // 类型 JSON,XML,CALLBACK,ARRAY      $this->xmlroot = $this->exists($param,'xmlroot')? $param['xmlroot'] : 'xmlroot';   // xml root dom name      $this->callback = $this->exists($param,'callback')? $param['callback'] : '';     // JS callback function name          $format = array();      $format['retcode'] = $this->exists($param,'format.retcode')? $param['format']['retcode'] : 'retcode';//retcode 对应名称      $format['msg'] = $this->exists($param,'format.msg')? $param['format']['msg'] : 'msg';        //msg 对应名称      $format['data'] = $this->exists($param,'format.data')? $param['format']['data'] : 'data';      //data 对应名称          $result = array();      $result[$format['retcode']] = $this->exists($param,'retcode')? $param['retcode'] : 0;      $result[$format['msg']] = $this->exists($param,'msg')? $param['msg'] : '';      $result[$format['data']] = $this->exists($param,'data')? $param['data'] : '';          $this->returnData = $result;    }        //输出数据    public function data_return(){      ob_clean();      switch($this->type){        case 'JSON':          $this->json_return();          break;        case 'XML':          $this->xml_return();          break;        case 'CALLBACK':          $this->callback_return();          break;        case 'ARRAY':          $this->array_return();          break;        default:          $this->json_return();      }      exit();    }        //输出JSON格式数据,如有callback参数则返回JSONP格式    private function json_return(){      header('content-type:text/html;charset=utf-8');      if(empty($this->callback)){        echo json_encode($this->returnData);      }else{        echo $this->callback.'('.json_encode($this->returnData).');';      }    }        //输出XML格式数据    private function xml_return(){      header('content-type:text/xml;charset=utf-8');      echo $this->xml_encode($this->returnData,$this->xmlroot);    }        //输出JSON格式数据，并调用callback方法    private function callback_return(){      header('content-type:text/html;charset=utf-8');      $this->callback = empty($this->callback)? 'callback' : $this->callback;      echo "<script type="text/javascript">rn";      echo $this->callback."(".json_encode($this->returnData).");rn";      echo "</script>";    }&n