PHP微信红包API接口

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;
 }

/**
 * 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; 
}

/**
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());
 }
 
}

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:$error\n"; 
  curl_close($ch);
  return false;
 }
}

@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');
}