php類：返回數據格式化類

DataReturn.class.php

<?php  
/** 返回數據格式化類
*   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';      // 類型 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 對應名稱  
        $format['msg'] = $this->exists($param,'format.msg')? $param['format']['msg'] : 'msg';                //msg 對應名稱  
        $format['data'] = $this->exists($param,'format.data')? $param['format']['data'] : 'data';            //data 對應名稱  
      
        $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;  
    }  
      
      
    //輸出數據  
    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();  
    }  
      
      
    //輸出JSON格式數據,如有callback參數則返回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).');';  
        }  
    }  
      
      
    //輸出XML格式數據  
    private function xml_return(){  
        header('content-type:text/xml;charset=utf-8');  
        echo $this->xml_encode($this->returnData,$this->xmlroot);  
    }  
      
      
    //輸出JSON格式數據，並調用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\">\r\n";
        echo $this->callback."(".json_encode($this->returnData).");\r\n";  
        echo "</script>";  
    }  
      
      
    //輸出數組格式數據 
	// 查看本欄目