php实现微信发红包功能

<?phpclass wxPay {  //配置参数信息  const SHANGHUHAO = "1430998xxx";//商户号  const PARTNERKEY = "leFyTOXWzUEXxfp47WOu5d9xxxxxx";  //api，商户后台  //核心支付函数,参数：请求地址和参数  function pay($url,$obj) {    $obj['nonce_str'] = $this->create_noncestr();  //创建随机字符串    $stringA = $this->create_qianming($obj,false);  //创建签名    $stringSignTemp = $stringA."&key=leFyTOXWzUEXxfp47WOu5xxxxxx";  //签名后加api    $sign = strtoupper(md5($stringSignTemp));  //签名加密并大写    $obj['sign'] = $sign;  //将签名传入数组    $postXml = $this->arrayToXml($obj);  //将参数转为xml格式    var_dump($postXml);      $responseXml = $this->curl_post_ssl($url,$postXml);  //提交请求    var_dump($responseXml);    return $responseXml;  }    //生成签名,参数：生成签名的参数和是否编码  function create_qianming($arr,$urlencode) {    $buff = "";    ksort($arr); //对传进来的数组参数里面的内容按照字母顺序排序，a在前面，z在最后（字典序）    foreach ($arr as $k=>$v) {      if(null!=$v && "null" != $v && "sign" != $k) {  //签名不要转码        if ($urlencode) {          $v = urlencode($v);        }        $buff.=$k."=".$v."&";      }    }    if (strlen($buff)>0) {        $reqPar = substr($buff,0,strlen($buff)-1); //去掉末尾符号“&”    }    return $reqPar;  }    //生成随机字符串，默认32位  function create_noncestr($length=32) {    //创建随机字符    $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";    $str = "";    for($i=0;$i<$length;$i++) {      $str.=substr($chars, mt_rand(0,strlen($chars)-1),1);    }    return $str;    }  //数组转xml  function arrayToXml($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 $xml;  }    //post请求网站，需要证书  function curl_post_ssl($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:$error/n";      curl_close($ch);      return false;    }  }  }

<?phprequire 'wxpay.class.php';<br><br>//数组参数$money = 100; //最低1元，单位分$sender = "晨缘房产";$obj2 = array();$obj2['wxappid'] = ""; //appid$obj2['mch_id'] = "";　　//商户id$obj2['mch_billno'] = "商户id".date('YmdHis').rand(1000,9999);　　//组合成28位，根据官方开发文档，可以自行设置$obj2['client_ip'] = $_SERVER['REMOTE_ADDR'];$obj2['re_openid'] = "oUxO6v26wdyMHThD9kfDW6NB_xbE";　　//接收红包openid$obj2['total_amount'] = $money;$obj2['min_value'] = $money;$obj2['max_value'] = $money;$obj2['total_num'] = 1;$obj2['nick_name'] = $sender;$obj2['send_name'] = $sender;$obj2['wishing'] = "恭喜发财";$obj2['act_name'] = $sender."红包";$obj2['remark'] = $sender."红包"; $url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack";$wxpay = new wxPay();$res = $wxpay->pay($url, $obj2);var_dump($res);