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Return data formatting class example implemented by PHP_PHP tutorial
- WBOYOriginal
- 2016-07-13 10:18:44946browse
Example of return data formatting class implemented by php
The DataReturn.class.php class file is as follows:
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/**Return data formatting class * 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'; // Type 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 corresponding name $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' : $this->callback; echo ""; }
//输出数组格式数据 private function array_return(){ header('content-type:text/html;charset=utf-8'); echo ' '; </p>
<p> print_r($this->returnData); </p>
<p> echo '';
}
//XML编码 private function xml_encode($data, $root='xmlroot', $encoding='utf-8') { $xml = "n"; $xml.= "<" . $root . ">n"; $xml.= $this->data_to_xml($data); $xml.= ""; return $xml; }
//数组转XML格式 private function data_to_xml($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.="n"; } return $xml; }
//判断数据是否存在 private function exists($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($obj); } }
//判断是否需要加上标记 private function cdata($val){ if(!empty($val) && !preg_match('/^[A-Za-z0-9+$]/',$val)){ $val = ''; } return $val; } } // class end ?> |
The demo sample program is as follows:
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<🎜> require_once('DataReturn.class.php'); <🎜> <🎜> $param = array( // DataReturn parameter <🎜> <🎜> 'type' => 'JSON', // The output type JSON, XML, CALLBACK, ARRAY defaults to JSON <🎜> <🎜> 'retcode' => '1000', // The value of retcode, the default is 0 <🎜> <🎜> 'msg' => '', // msg value, default is empty <🎜> <🎜> 'data' => array( // Data to be output <🎜> <🎜> 'id' => '100', <🎜> <🎜> 'name' => 'fdipzone', <🎜> <🎜> 'gender' => 1, 'age' => 28 ), ‘format’ => array( // Output data key format, default is retcode,msg,data 'retcode' => 'status', 'msg' => 'info', 'data' => 'result' ), 'xmlroot' => 'xmlroot', // When type=XML, the name of the XML root node, the default is xmlroot 'callback' => 'callback' /* callback method name When type=JSON, the default is empty. If it is not empty, callback({data}) is output; When type=CALLBACK, the default is callback, which automatically calls the page JS callback method ); $obj = new DataReturn($param); // Create DataReturn class object $obj->data_return(); // Output data according to format ?> |