DataReturn.class.php類文件如下：
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">rn"; echo $this->callback."(".json_encode($this->returnData).");rn"; 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示例程序如下：
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 <?php 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 ?>
