<?php

 /**

  * API

  * User: sgfoot

  * Date: 2017/3/20

  * Time: 18:05

  */

 class apiCurl

 {

     private $config = array(

         'key'     => '7D86A79BA5C4C278E5264D5E910B3A64',

     );

     public function execute($url, $params)

     {

         $baseParams = $this->getParams();

         $apiPrams = array_merge($baseParams, $params);

         $apiPrams['sign'] = $this->getSign($apiPrams);

         $xml = $this->arrayToXml($apiPrams);

         $xml_result = Cpost($url, $xml);

         $result = $this->xmlToArray($xml_result);

         return $result;

     }

     /**

      * 获取基础参数

      * @author: wzl

      * @date: 2017

      * @return array

      */

     protected function getParams()

     {

         $params = array(

             'nonce_str' => $this->getNonce(),

             'sign_type' => 'MD5',

         );

         return $params;

     }

     /**

      *    作用：生成签名

      */

     protected function getSign($Obj)

     {

         foreach ($Obj as $k => $v) {

             $Parameters[$k] = $v;

         }

         //签名步骤一：按字典序排序参数

         ksort($Parameters);

         $String = $this->formatBizQueryParaMap($Parameters, false);

         //echo '【string1】'.$String.'</br>';

         //签名步骤二：在string后加入KEY

         $String = $String . "&key=" . $this->config['key'];

         //echo "【string2】".$String."</br>";

         //签名步骤三：MD5加密

         $String = md5($String);

         //echo "【string3】 ".$String."</br>";

         //签名步骤四：所有字符转为大写

         $result_ = strtoupper($String);

         //echo "【result】 ".$result_."</br>";

         return $result_;

     }

     /**

      *    作用：格式化参数，签名过程需要使用

      */

     protected function formatBizQueryParaMap($paraMap, $urlencode)

     {

         $buff = "";

         ksort($paraMap);

         foreach ($paraMap as $k => $v) {

             if ($urlencode) {

                 $v = urlencode($v);

             }

             $buff .= $k . "=" . $v . "&";

         }

         $reqPar = '';

         if (strlen($buff) > 0) {

             $reqPar = substr($buff, 0, strlen($buff) - 1);

         }

         return $reqPar;

     }

     /**

      *     作用：将xml转为array

      */

     protected function xmlToArray($xml)

     {

         //将XML转为array

         $array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);

         return $array_data;

     }

     /**

      *     作用：array转xml

      */

     protected function arrayToXml($arr)

     {

         $xml = "<xml>";

         foreach ($arr as $key=>$val)

         {

             if (is_numeric($val))

             {

                 $xml.="<".$key.">".$val."</".$key.">";

             }

             else

                 $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";

         }

         $xml.="</xml>";

         return $xml;

     }

 }