微信支付之app支付

最新推荐文章于 2021-07-06 14:40:31 发布
原创最新推荐文章于 2021-07-06 14:40:31 发布 · 258 阅读
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    public function wxWapPay(){
			$out_trade_no = $_GET['out_trade_no']; //商家订单号
			$total_fee = $_GET['total_fee']*100; //商品价格 单位为分
			$time = time();
			$nonce_str = xxx; //随机字符串 不多于32位
			$appid = xxx; //appid
			$mch_id = xxx;  //商户号
			$key = xxx; //支付密钥
			$notify_url = xxx; //回调地址
			$body = "app支付";  //描述
			$scene_info = '{"h5_info": {"type":"Wap","wap_url": "http://www.xxx.cn","wap_name": "订单支付"}}'; 
			$spbill_create_ip = $this->get_client_ip(); //获取ip
			$trade_type = "MWEB";    //固定的
			// 下面的参数含义直接看文档
			$tmpArr = array(
				'appid'		=>$appid,   
				'attach'	=>$out_trade_no,
				'body'		=>$body,
				'mch_id'	=>$mch_id,
				'nonce_str'	=>$nonce_str, 
				'notify_url'=>$notify_url,
				'spbill_create_ip'=>$spbill_create_ip,
				'out_trade_no'=>$out_trade_no,
				'scene_info'=>$scene_info,
				'total_fee'	=>$total_fee,
				'trade_type'=>'MWEB' 
				);
			//签名逻辑官网有说明，签名步骤就不解释了
			ksort($tmpArr);  
			$buff = "";
			foreach ($tmpArr as $k => $v)
			{
			   $buff .= $k . "=" . $v . "&";
			}
			$buff = trim($buff, "&");
			$stringSignTemp=$buff."&key=".$key;
			$sign = strtoupper(MD5($stringSignTemp)); // MD5 后转换成大写
			$xml = "<xml>
					   <appid>".$appid."</appid>
					   <attach>".$out_trade_no."</attach>
					   <body>".$body."</body>
					   <mch_id>".$mch_id."</mch_id>
					   <nonce_str>".$nonce_str."</nonce_str>
					   <notify_url>".$notify_url."</notify_url>
					   <out_trade_no>".$out_trade_no."</out_trade_no>
					   <spbill_create_ip>".$spbill_create_ip."</spbill_create_ip>
					   <total_fee>".$total_fee."</total_fee>
					   <trade_type>MWEB</trade_type>
					   <scene_info>".$scene_info."</scene_info>
					   <sign>".$sign."</sign>
					</xml> ";
			$posturl = "https://api.mch.weixin.qq.com/pay/unifiedorder";

          	$res = $this->http_post($posturl,$xml);
          	//dump($res);exit;
			$objectxml = (array)simplexml_load_string($res, 'SimpleXMLElement', LIBXML_NOCDATA); //将微信返回的XML 转换成数组
          	if($objectxml['result_code'] == 'SUCCESS'){
				header('location:'.$objectxml['mweb_url']);
              echo "<a href=".$objectxml['mweb_url'].">点击支付</a>";
          	}
		}
     public function http_post($url, $data) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL,$url);
        curl_setopt($ch, CURLOPT_HEADER,0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        $res = curl_exec($ch);
        curl_close($ch);
        return $res;
    }

		public function get_client_ip($type = 0) {
			$type       =  $type ? 1 : 0;
			$ip         =   'unknown';
			if ($ip !== 'unknown') return $ip[$type];
			if($_SERVER['HTTP_X_REAL_IP']){//nginx 代理模式下，获取客户端真实IP
				$ip=$_SERVER['HTTP_X_REAL_IP'];
			}elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {//客户端的ip
				$ip     =   $_SERVER['HTTP_CLIENT_IP'];
			}elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {//浏览当前页面的用户计算机的网关
				$arr    =   explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
				$pos    =   array_search('unknown',$arr);
				if(false !== $pos) unset($arr[$pos]);
				$ip     =   trim($arr[0]);
			}elseif (isset($_SERVER['REMOTE_ADDR'])) {
				$ip     =   $_SERVER['REMOTE_ADDR'];//浏览当前页面的用户计算机的ip地址
			}else{
				$ip=$_SERVER['REMOTE_ADDR'];
			}
			// IP地址合法验证
			$long = sprintf("%u",ip2long($ip));
			$ip   = $long ? array($ip, $long) : array('0.0.0.0', 0);
			return $ip[$type];
		}