Return data formatting class example implemented by PHP_PHP tutorial

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 "     echo $this->callback."(".json_encode($this->returnData).");rn";      echo "";    }        //输出数组格式数据    private function array_return(){      header('content-type:text/html;charset=utf-8');      echo ' ';  <p>    print_r($this->returnData); </p> <p>    echo '</p> ';    }        //XML编码    private function xml_encode($data, $root='xmlroot', $encoding='utf-8') {      $xml = "n";      $xml.= "n";      $xml.= $this->data_to_xml($data);      $xml.= "" . $root . ">";      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.="";        $xml.= ( is_array($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); $i         if(isset($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 参数            'type'  => 'JSON', // 输出的类型 JSON,XML,CALLBACK,ARRAY 默认为 JSON            'retcode' => '1000', // retcode 的值，默认为0            'msg'   => '',   // msg 的值，默认为空            'data'  => array( // 要输出的数据                    'id'   => '100',                    'name'  => 'fdipzone',                    'gender' => 1,                    'age'  => 28                   ),            'format' => array( // 输出的数据key格式,默认为 retcode,msg,data                    'retcode' => 'status',                    'msg'   => 'info',                    'data'  => 'result'                   ),            'xmlroot' => 'xmlroot', // 当type=XML时,XML根节点名称，默认为xmlroot            'callback' => 'callback' /* 回调方法名称                            type=JSON时，默认为空，如不为空，则输出callback({data});                            type=CALLBACK时,默认为callback，自动调用页面JS回调方法                         */    );    $obj = new DataReturn($param); // 创建DataReturn类对象    $obj->data_return();      // 按格式输出数据  ?>

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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 ?>

http://www.bkjia.com/PHPjc/882703.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/882703.htmlTechArticleThe return data formatting class instance implemented by php DataReturn.class.php class file is as follows: 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...