PHP 微信支付类 demo

一切尽在代码中，代码附有注释，欢迎大家参考。

mchid = $mchid; // 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
    $this->appid = $appid; //公众号APPID 通过微信支付商户资料审核后邮件发送
    $this->key = $key;   //https://pay.weixin.qq.com 帐户设置-安全设置-API安全-API密钥-设置API密钥
  }
  
  public function createJsBizPackage($openid, $totalFee, $outTradeNo, $orderName, $notifyUrl, $timestamp)
  {
    $config = array(
      'mch_id' => $this->mchid,
      'appid' => $this->appid,
      'key' => $this->key,
    );
    $unified = array(
      'appid' => $config['appid'],
      'attach' => '支付',      //商家数据包，原样返回
      'body' => $orderName,
      'mch_id' => $config['mch_id'],
      'nonce_str' => self::createNonceStr(),
      'notify_url' => $notifyUrl,
      'openid' => $openid,     //rade_type=JSAPI，此参数必传
      'out_trade_no' => $outTradeNo,
      'spbill_create_ip' => '127.0.0.1',
      'total_fee' => intval($totalFee * 100),//单位 转为分
      'trade_type' => 'JSAPI',
    );
    $unified['sign'] = self::getSign($unified, $config['key']);
    $responseXml = self::curlPost('https://api.mch.weixin.qq.com/pay/unifiedorder', self::arrayToXml($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);
      
    }
    //$unifiedOrder->trade_type 交易类型 调用接口提交的交易类型，取值如下：JSAPI，NATIVE，APP
    //$unifiedOrder->prepay_id 预支付交易会话标识 微信生成的预支付回话标识，用于后续接口调用中使用，该值有效期为2小时
    //$unifiedOrder->code_url 二维码链接 trade_type为NATIVE是有返回，可将该参数值生成二维码展示出来进行扫码支付
    $arr = array(
      "appId" => $config['appid'],
      "timeStamp" => $timestamp,
      "nonceStr" => self::createNonceStr(),
      "package" => "prepay_id=" . $unifiedOrder->prepay_id,
      "signType" => 'MD5',
    );
    $arr['paySign'] = self::getSign($arr, $config['key']);
    return $arr;
  }
  public function notify()
  {
    $config = array(
      'mch_id' => $this->mchid,
      'appid' => $this->appid,
      'key' => $this->key,
    );
    $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
    //error_log($postStr, 3, './str.txt');
    
    $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
    if ($postObj === false) {
      die('parse xml error');
    }
    if ($postObj->return_code != 'SUCCESS') {
      die($postObj->return_msg);
    }
    if ($postObj->result_code != 'SUCCESS') {
      die($postObj->err_code);
    }
    $arr = (array)$postObj;
    unset($arr['sign']);
    if (self::getSign($arr, $config['key']) == $postObj->sign) {
      // $mch_id = $postObj->mch_id; //微信支付分配的商户号
      // $appid = $postObj->appid; //微信分配的公众账号ID
      // $openid = $postObj->openid; //用户在商户appid下的唯一标识
      // $transaction_id = $postObj->transaction_id;//微信支付订单号
      // $out_trade_no = $postObj->out_trade_no;//商户订单号
      // $total_fee = $postObj->total_fee; //订单总金额，单位为分
      // $is_subscribe = $postObj->is_subscribe; //用户是否关注公众账号，Y-关注，N-未关注，仅在公众账号类型支付有效
      // $attach = $postObj->attach;//商家数据包，原样返回
      // $time_end = $postObj->time_end;//支付完成时间
      echo '';
      return $postObj;
    }
  }
  
  public static function curlGet($url = '', $options = array())
  {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 30);
    if (!empty($options)) {
      curl_setopt_array($ch, $options);
    }
    //https请求 不验证证书和host
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
  }
  public static function curlPost($url = '', $postData = '', $options = array())
  {
    if (is_array($postData)) {
      $postData = http_build_query($postData);
    }
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
    curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
    if (!empty($options)) {
      curl_setopt_array($ch, $options);
    }
    //https请求 不验证证书和host
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
  }
  public static function createNonceStr($length = 16)
  {
    $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
    $str = '';
    for ($i = 0; $i < $length; $i++) {
      $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
    }
    return $str;
  }
  public static function arrayToXml($arr)
  {
    $xml = "";
    foreach ($arr as $key => $val) {
      if (is_numeric($val)) {
 $xml .= "<" . $key . ">" . $val . "";
      } else
 $xml .= "<" . $key . ">";
    }
    $xml .= "";
    return $xml;
  }
  
  public static function getSign($params, $key)
  {
    ksort($params, SORT_STRING);
    $unSignParaString = self::formatQueryParaMap($params, false);
    $signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
    return $signStr;
  }
  protected static function formatQueryParaMap($paraMap, $urlEncode = false)
  {
    $buff = "";
    ksort($paraMap);
    foreach ($paraMap as $k => $v) {
      if (null != $v && "null" != $v) {
 if ($urlEncode) {
   $v = urlencode($v);
 }
 $buff .= $k . "=" . $v . "&";
      }
    }
    $reqPar = '';
    if (strlen($buff) > 0) {
      $reqPar = substr($buff, 0, strlen($buff) - 1);
    }
    return $reqPar;
  }
}

以上代码大家都能看得懂吧，有哪里不明白的地方欢迎给我留言，我会在第一时间和大家取得联系的。谢谢大家对考高分网网站的支持。