Thinkphp 5.0实现微信企业付款到零钱

function transfer($data){
  //支付信息
  $wxchat['appid'] = WxPayConfig::$appid;
  $wxchat['mchid'] = WxPayConfig::$mchid;
  $webdata = array(
  'mch_appid' => $wxchat['appid'],//商户账号appid
    'mchid'  => $wxchat['mchid'],//商户号
  'nonce_str' => md5(time()),//随机字符串
    'partner_trade_no'=> date('YmdHis'), //商户订单号，需要唯一
  'openid' => $data['openid'],//转账用户的openid
  'check_name'=> 'NO_CHECK', //OPTION_CHECK不强制校验真实姓名, FORCE_CHECK：强制 NO_CHECK：
  'amount' => $data['money']*100, //付款金额单位为分
  'desc' => '微信企业付款到零钱',//企业付款描述信息
  'spbill_create_ip' => request()->ip(),//获取IP
  );
  foreach ($webdata as $k => $v) {
  $tarr[] =$k.'='.$v;
  }
  sort($tarr);
  $sign = implode($tarr, '&');
  $sign .= '&key='.WxPayConfig::$key;
  $webdata['sign']=strtoupper(md5($sign));
  $wget = $this->ArrToXml($webdata);//数组转XML
  $pay_url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers';//api地址
  $res = $this->postData($pay_url,$wget);//发送数据
  if(!$res){
  return array('status'=>1, 'msg'=>"Can't connect the server" );
  }
  $content = simplexml_load_string($res, 'SimpleXMLElement', LIBXML_NOCDATA);
  if(strval($content->return_code) == 'FAIL'){
  return array('status'=>1, 'msg'=>strval($content->return_msg));
  }
  if(strval($content->result_code) == 'FAIL'){
  return array('status'=>1, 'msg'=>strval($content->err_code),':'.strval($content->err_code_des));
  }
  $rdata = array(
  'mch_appid'  => strval($content->mch_appid),
  'mchid'   => strval($content->mchid),
  'device_info'  => strval($content->device_info),
  'nonce_str'  => strval($content->nonce_str),
  'result_code'  => strval($content->result_code),
  'partner_trade_no' => strval($content->partner_trade_no),
  'payment_no'  => strval($content->payment_no),
  'payment_time'  => strval($content->payment_time),
  );
  return $rdata;
}

//数组转XML
 function ArrToXml($arr)
 {
  if(!is_array($arr) || count($arr) == 0) return '';
  $xml = "<xml>";
  foreach ($arr as $key=>$val)
  {
   if (is_numeric($val)){
    $xml.="<".$key.">".$val."</".$key.">";
   }else{
    $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
   }
  }
  $xml.="</xml>";
  return $xml;
 }

//发送数据
 function postData($url,$postfields){
  $ch = curl_init();
  $params[CURLOPT_URL] = $url; //请求url地址
  $params[CURLOPT_HEADER] = false; //是否返回响应头信息
  $params[CURLOPT_RETURNTRANSFER] = true; //是否将结果返回
  $params[CURLOPT_FOLLOWLOCATION] = true; //是否重定向
  $params[CURLOPT_POST] = true;
  $params[CURLOPT_POSTFIELDS] = $postfields;
  $params[CURLOPT_SSL_VERIFYPEER] = false;
  $params[CURLOPT_SSL_VERIFYHOST] = false;
  //以下是证书相关代码
  $params[CURLOPT_SSLCERTTYPE] = 'PEM';
  $params[CURLOPT_SSLCERT] = getcwd().'/plugins/payment/weixin/cert/apiclient_cert.pem';//绝对路径
  $params[CURLOPT_SSLKEYTYPE] = 'PEM';
  $params[CURLOPT_SSLKEY] = getcwd().'/plugins/payment/weixin/cert/apiclient_key.pem';//绝对路径
  curl_setopt_array($ch, $params); //传入curl参数
  $content = curl_exec($ch); //执行
  curl_close($ch); //关闭连接
  return $content;
 }