php实现微信支付之企业付款

账户设置->API安全->下载证书，证书路径在第207行和210行修改 * 2.错误码参照 ：https://pay.weixin.qq.com/wiki/doc/api/tools/mch_pay.php?chapter=14_2 */ header('Content-type:text/html; Charset=utf-8'); $mchid = 'xxxxx'; //微信支付商户号 PartnerID 通过微信支付商户资料审核后邮件发送 $appid = 'xxxxx'; //微信支付申请对应的公众号的APPID $appKey = 'xxxxx'; //微信支付申请对应的公众号的APP Key $apiKey = 'xxxxx'; //https://pay.weixin.qq.com 帐户设置-安全设置-API安全-API密钥-设置API密钥

//①、获取当前访问页面的用户openid（如果给指定用户转账，则直接填写指定用户的openid)
$wxPay = new WxpayService($mchid,$appid,$appKey,$apiKey);
$openId = $wxPay->GetOpenid(); //获取openid
if(!$openId) exit('获取openid失败');
//②、付款
$outTradeNo = uniqid(); //订单号
$payAmount = 1; //转账金额，单位:元。转账最小金额为1元
$trueName = '张三'; //收款人真实姓名
$result = $wxPay->createJsBizPackage($openId,$payAmount,$outTradeNo,$trueName);
echo 'success';
class WxpayService
{
protected $mchid;
protected $appid;
protected $appKey;
protected $apiKey;
public $data = null;

public function __construct($mchid,$key)
{
$this->mchid = $mchid;
$this->appid = $appid;
$this->appKey = $appKey;
$this->apiKey = $key;
}

/**

• 通过跳转获取用户的openid，跳转流程如下：
• 1、设置自己需要调回的url及其其他参数，跳转到微信服务器https://open.weixin.qq.com/connect/oauth2/authorize
• 2、微信服务处理完成之后会跳转回用户redirect_uri地址，此时会带上一些参数，如：code
• @return 用户的openid
  */
  public function GetOpenid()
  {
  //通过code获得openid
  if (!isset($_GET['code'])){
  //触发微信返回code码
  $scheme = $_SERVER['HTTPS']=='on' ? 'https://' : 'http://';
  $baseUrl = urlencode($scheme.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].$_SERVER['QUERY_STRING']);
  $url = $this->__CreateOauthUrlForCode($baseUrl);
  Header("Location: $url");
  exit();
  } else {
  //获取code码，以获取openid
  $code = $_GET['code'];
  $openid = $this->getOpenidFromMp($code);
  return $openid;
  }
  }

/**

• 通过code从工作平台获取openid机器access_token
• @param string $code 微信跳转回来带上的code
• @return openid
  */
  public function GetOpenidFromMp($code)
  {
  $url = $this->__CreateOauthUrlForOpenid($code);
  $res = self::curlGet($url);
  //取出openid
  $data = json_decode($res,true);
  $this->data = $data;
  $openid = $data['openid'];
  return $openid;
  }

/**

• 构造获取open和access_toke的url地址
• @param string $code，微信跳转带回的code
• @return 请求的url
  */
  private function __CreateOauthUrlForOpenid($code)
  {
  $urlObj["appid"] = $this->appid;
  $urlObj["secret"] = $this->appKey;
  $urlObj["code"] = $code;
  $urlObj["grant_type"] = "authorization_code";
  $bizString = $this->ToUrlParams($urlObj);
  return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString;
  }

/**

• 构造获取code的url连接
• @param string $redirectUrl 微信服务器回跳的url，需要url编码
• @return 返回构造好的url
  */
  private function __CreateOauthUrlForCode($redirectUrl)
  {
  $urlObj["appid"] = $this->appid;
  $urlObj["redirect_uri"] = "$redirectUrl";
  $urlObj["response_type"] = "code";
  $urlObj["scope"] = "snsapi_base";
  $urlObj["state"] = "STATE"."#wechat_redirect";
  $bizString = $this->ToUrlParams($urlObj);
  return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString;
  }

/**

• 拼接签名字符串
• @param array $urlObj
• @return 返回已经拼接好的字符串
  */
  private function ToUrlParams($urlObj)
  {
  $buff = "";
  foreach ($urlObj as $k => $v)
  {
  if($k != "sign") $buff .= $k . "=" . $v . "&";
  }
  $buff = trim($buff,"&");
  return $buff;
  }

/**

• 企业付款
• @param string $openid 调用【网页授权获取用户信息】接口获取到用户在该公众号下的Openid
• @param float $totalFee 收款总费用 单位元
• @param string $outTradeNo 唯一的订单号
• @param string $orderName 订单名称
• @param string $notifyUrl 支付结果通知url 不要有问号
• @param string $timestamp 支付时间
• @return string
  /
  public function createJsBizPackage($openid,$totalFee,$trueName)
  {
  $config = array(
  'mch_id' => $this->mchid,'appid' => $this->appid,'key' => $this->apiKey,);
  $unified = array(
  'mch_appid' => $config['appid'],'mchid' => $config['mch_id'],'nonce_str' => self::createNonceStr(),'openid' => $openid,'check_name'=>'FORCE_CHECK',//校验用户姓名选项。NO_CHECK：不校验真实姓名，FORCE_CHECK：强校验真实姓名
  're_user_name'=>$trueName,//收款用户真实姓名（不支持给非实名用户打款）
  'partner_trade_no' => $outTradeNo,'spbill_create_ip' => '127.0.0.1','amount' => intval($totalFee 100),//单位 转为分
  'desc'=>'付款',//企业付款操作说明信息
  );
  $unified['sign'] = self::getSign($unified,$config['key']);
  $responseXml = $this->curlPost('https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers',self::arrayToXml($unified));
  $unifiedOrder = simplexml_load_string($responseXml,'SimpleXMLElement',LIBXML_NOCDATA);
  if ($unifiedOrder === false) {
  die('parse xml error');
  }
  if ($unifiedOrder->return_code != 'SUCCESS') {
  die($unifiedOrder->return_msg);
  }
  if ($unifiedOrder->result_code != 'SUCCESS') {
  die($unifiedOrder->err_code);
  }
  return true;
  }

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