时间:2021-07-01 10:21:17 帮助过:23人阅读
- <?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,并調用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
- private function array_return(){
- header('content-type:text/html;charset=utf-8');
- echo '<pre>';
- print_r($this->returnData);
- echo '</pre>';
- }
- //XML編碼
- private function xml_encode($data, $root='xmlroot', $encoding='utf-8') {
- $xml = "<?xml version=\"1.0\" encoding=\"" . $encoding . "\"?>\n";
- $xml.= "<" . $root . ">\n";
- $xml.= $this->data_to_xml($data);
- $xml.= "</" . $root . ">";
- return $xml;
- }
- //數組轉XML格式
- private function data_to_xml($data) {
- if (is_object($data)) {
- $data = get_object_vars($data);
- }
- $xml = '';
- foreach ($data as $key => $val) {
- is_numeric($key) && $key = "item id=\"$key\"";
- $xml.="<$key>";
- $xml.= ( is_array($val) || is_object($val)) ? $this->data_to_xml($val) : $this->cdata($val);
- list($key, ) = explode(' ', $key);
- $xml.="</$key>\n";
- }
- return $xml;
- }
- //判斷數據是否存在
- private function exists($obj,$key=''){
- if($key==''){
- return isset($obj) && !empty($obj);
- }else{
- $keys = explode('.',$key);
- for($i=0,$max=count($keys); $i<$max; $i++){
- if(isset($obj[$keys[$i]])){
- $obj = $obj[$keys[$i]];
- }else{
- return false;
- }
- }
- return isset($obj) && !empty($obj);
- }
- }
- //判斷是否需要加上<![CDATA[]]>標記
- private function cdata($val){
- if(!empty($val) && !preg_match('/^[A-Za-z0-9+$]/',$val)){
- $val = '<![CDATA['.$val.']]>';
- }
- return $val;
- }
- }
- // class end
- ?>
demo
- <?
- require_once('DataReturn.class.php');
- $param = array( // DataReturn 參數
- 'type' => 'JSON', // 輸出的類型 JSON,XML,CALLBACK,ARRAY 默認為 JSON
- 'retcode' => '1000', // retcode 的值,默認為0
- 'msg' => '', // msg 的值,默認為空
- 'data' => array( // 要輸出的數據
- 'id' => '100',
- 'name' => 'fdipzone',
- 'gender' => 1,
- 'age' => 28
- ),
- 'format' => array(// 輸出的數據key格式,默認為 retcode,msg,data
- 'retcode' => 'status',
- 'msg' => 'info',
- 'data' => 'result'
- ),
- 'xmlroot' => 'xmlroot', // 當type=XML時,XML根節點名稱,默認為xmlroot
- 'callback' => 'callback' /* 回調方法名稱
- type=JSON時,默認為空,如不為空,則輸出callback({data});
- type=CALLBACK時,默認為callback,自動調用頁面JS回調方法
- */
- );
- $obj = new DataReturn($param); // 創建DataReturn類對象
- $obj->data_return(); // 按格式輸出數據
- ?>
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