实现PHP微信红包API接口

首先给大家看一看这个表格：

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根据微信高级红包接口，开发PHP版本的API接口，现在进行主要代码分析。

红包接口调用请求代码，所有请求参数为必填参数与文档对应：

class Wxapi {  private $app_id = 'wxXXXXXXXXXXXX'; //公众账号appid，首先申请与之配套的公众账号  private $app_secret = 'XXXXXXXXXXXXXXXXXXXXXXXX';//公众号secret，用户获取用户授权token  private $app_mchid = 'XXXXXXXX';//商户号id  function __construct(){  //do sth here....  }  /**   * 微信支付   * @param string $openid 用户openid   */  public function pay($re_openid)  {   include_once('WxHongBaoHelper.php');   $commonUtil = new CommonUtil();   $wxHongBaoHelper = new WxHongBaoHelper();   $wxHongBaoHelper->setParameter("nonce_str", $this->great_rand());//随机字符串，丌长于 32 位   $wxHongBaoHelper->setParameter("mch_billno", $this->app_mchid.date('YmdHis').rand(1000, 9999));//订单号   $wxHongBaoHelper->setParameter("mch_id", $this->app_mchid);//商户号   $wxHongBaoHelper->setParameter("wxappid", $this->app_id);   $wxHongBaoHelper->setParameter("nick_name", '红包');//提供方名称   $wxHongBaoHelper->setParameter("send_name", '红包');//红包发送者名称   $wxHongBaoHelper->setParameter("re_openid", $re_openid);//相对于医脉互通的openid   $wxHongBaoHelper->setParameter("total_amount", 100);//付款金额，单位分   $wxHongBaoHelper->setParameter("min_value", 100);//最小红包金额，单位分   $wxHongBaoHelper->setParameter("max_value", 100);//最大红包金额，单位分   $wxHongBaoHelper->setParameter("total_num", 1);//红包収放总人数   $wxHongBaoHelper->setParameter("wishing", '感谢您参与红包派发活动，祝您新年快乐！');//红包祝福诧   $wxHongBaoHelper->setParameter("client_ip", '127.0.0.1');//调用接口的机器 Ip 地址   $wxHongBaoHelper->setParameter("act_name", '红包活动');//活劢名称   $wxHongBaoHelper->setParameter("remark", '快来抢！');//备注信息   $postXml = $wxHongBaoHelper->create_hongbao_xml();   $url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack';   $responseXml = $wxHongBaoHelper->curl_post_ssl($url, $postXml);   //用作结果调试输出   //echo htmlentities($responseXml,ENT_COMPAT,'UTF-8');  $responseObj = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA);  return $responseObj->return_code;  }

获取随机字符串方法：

/**  * 生成随机数  */   public function great_rand(){  $str = '1234567890abcdefghijklmnopqrstuvwxyz';  for($i=0;$i<30;$i++){   $j=rand(0,35);   $t1 .= $str[$j];  }  return $t1;  }

签名算法：

/** 例如： appid： wxd111665abv58f4f mch_id： 10000100 device_info： 1000 Body： test nonce_str： ibuaiVcKdpRxkhJA 第一步：对参数按照 key=value 的格式，并按照参数名 ASCII 字典序排序如下： stringA="appid=wxd930ea5d5a258f4f&body=test&device_info=1000&mch_i d=10000100&nonce_str=ibuaiVcKdpRxkhJA"; 第二步：拼接支付密钥： stringSignTemp="stringA&key=192006250b4c09247ec02edce69f6a2d" sign=MD5(stringSignTemp).toUpperCase()="9A0A8659F005D6984697E2CA0A 9CF3B7" */ protected function get_sign(){  define('PARTNERKEY',"QSRXXXXXXXXXXXXXXXXXXXXX");  try {   if (null == PARTNERKEY || "" == PARTNERKEY ) {    throw new SDKRuntimeException("密钥不能为空！" . "<br>");   }   if($this->check_sign_parameters() == false) { //检查生成签名参数    throw new SDKRuntimeException("生成签名参数缺失！" . "<br>");   }   $commonUtil = new CommonUtil();   ksort($this->parameters);   $unSignParaString = $commonUtil->formatQueryParaMap($this->parameters, false);   $md5SignUtil = new MD5SignUtil();   return $md5SignUtil->sign($unSignParaString,$commonUtil->trimString(PARTNERKEY));  }catch (SDKRuntimeException $e)  {   die($e->errorMessage());  }   }

CURL请求以及发送证书：

function curl_post_ssl($url, $vars, $second=30,$aHeader=array()) {  $ch = curl_init();  //超时时间  curl_setopt($ch,CURLOPT_TIMEOUT,$second);  curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);  //这里设置代理，如果有的话  curl_setopt($ch,CURLOPT_URL,$url);  curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);  curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);    //cert 与 key 分别属于两个.pem文件  //请确保您的libcurl版本是否支持双向认证，版本高于7.20.1  curl_setopt($ch,CURLOPT_SSLCERT,dirname(__FILE__).DIRECTORY_SEPARATOR.'zhengshu'.DIRECTORY_SEPARATOR.'apiclient_cert.pem');  curl_setopt($ch,CURLOPT_SSLKEY,dirname(__FILE__).DIRECTORY_SEPARATOR.'zhengshu'.DIRECTORY_SEPARATOR.'apiclient_key.pem');  curl_setopt($ch,CURLOPT_CAINFO,dirname(__FILE__).DIRECTORY_SEPARATOR.'zhengshu'.DIRECTORY_SEPARATOR.'rootca.pem');  if( count($aHeader) >= 1 ){   curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);  }  curl_setopt($ch,CURLOPT_POST, 1);  curl_setopt($ch,CURLOPT_POSTFIELDS,$vars);  $data = curl_exec($ch);  if($data){   curl_close($ch);   return $data;  }  else {    $error = curl_errno($ch);   //echo "call faild, errorCode:$errorn";    curl_close($ch);   return false;  } }

入口文件：

@require "pay.php"; //获取用户信息 $get = $_GET['param']; $code = $_GET['code']; //判断code是否存在 if($get=='access_token' && !empty($code)){  $param['param'] = 'access_token';  $param['code'] = $code;  $packet = new Packet();  //获取用户openid信息  $userinfo = $packet->_route('userinfo',$param);  if(empty($userinfo['openid'])){   exit("NOAUTH");  }  //调取支付方法  $packet->_route('wxpacket',array('openid'=>$userinfo['openid'])); }else{  $packet->_route('userinfo'); }

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