微信支付之Native扫码支付 模式二

发表时间： 2017-06-14 11:09:59 | 浏览次数：

小编前面发布了微信JSAPI支付，今天有空顺便也发布一遍扫码支付的文章，满足大家需求。原来也是跟JSAPI支付一样，那就直接贴上代码：

WxPayJsApi.php：

// +----------------------------------------------------------------------
// | 微信支付统一接口
// | 1.JSAPI支付
// | 2.扫码支付
// +----------------------------------------------------------------------
// | Copyright (c) 2017 http://www.lrfun.com All rights reserved.
// +----------------------------------------------------------------------
// | Author: lrfun <admin@lrfun.com>
// +----------------------------------------------------------------------
// | Date: 2017-06-12
// +----------------------------------------------------------------------
 
Class WxPayJsApi{
	protected $appid;
    protected $mchid;
    protected $keys;
     
    function __construct(){
        $this->appid = "xxx";
        $this->mchid = "xxx";
        $this->keys  = "xxx";
    }
	
	/***
	 * 微信JSAPI支付
	 * @data 请求返回数据
	 * @return
	 **/
	public function jsapi($data){
		$data['trade_type'] = 'JSAPI';
		$result     = $this->unifiedorder($data);
		$jsApiData  = $this->getJsApiParameters($result);
		return $jsApiData;
	}
	
	/***
	 * 微信扫码支付
	 * @data 请求返回数据
	 * @return
	 **/
	public function native($data){
		$data['trade_type'] = 'NATIVE';
		$result = $this->unifiedorder($data);
		return $result;
	}
	
	/***
	 * 微信支付统一接口
	 * @data 请求参数
	 * @return
	 **/
	private function unifiedorder($data){
		$parameters = array();
		$parameters['appid']            = $this->appid;
		$parameters['mch_id']           = $this->mchid;
		$parameters['nonce_str']        = $this->getNonceStr();
		$parameters['body']             = $data['body'];
		$parameters['out_trade_no']     = $this->mchid . date("YmdHis");
		$parameters['total_fee']        = $data['total_fee'];
		$parameters['spbill_create_ip'] = $_SERVER["REMOTE_ADDR"];
		$parameters['notify_url']       = 'http://www.lrfun.com/wxPayCallback.php';
		$parameters['trade_type']       = $data['trade_type'];//支付类型：JSAPI，NATIVE，APP等
		$parameters['openid']           = $data['openid'];//微信用户的openid（前面有发表过如何获取openid的文章，这里不多说了）
		$parameters['time_start']       = date("YmdHis");
		$parameters['time_expire']      = date("YmdHis", time() + 3600);
		$parameters['attach']           = $data['orderId'];//订单ID，用于支付成功后，更新订单状态
		$parameters['sign']             = $this->getSign($parameters);
		
		$queryXml   = $this->arrayToXml($parameters);
		$url        = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
		$returnData = $this->httpRequest($url, $queryXml);
		$result     = $this->xmlToArray($returnData);
		return $result;
	}
	
	/***
	 * 微信支付生成签名
	 * @parameters 签名数据
	 * @return 签名字符串
	 **/
	public function getSign($parameters){
		ksort($parameters);
		$parametersUrl = urldecode(http_build_query($parameters)) .'&key='. $this->keys;
		$sign = strtoupper(md5($parametersUrl));
		return $sign;
	}
	
	/***
	 * 数组转xml
	 * @arr 数组
	 * @return xml
	 **/
	private function arrayToXml($arr){
		if(!is_array($arr) || count($arr) <= 0){
			exit("数组数据异常！");
		}
		
		$xml = "<xml>";
		foreach ($arr as $key=>$val){
			if (is_numeric($val)){
				$xml.="<".$key.">".$val."</".$key.">";
			}else{
				$xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
			}
		}
		$xml .= "</xml>";
		return $xml; 
	}
	
	/***
     * POST或GET请求
     * @url 请求url
     * @data POST数据
     * @return
     **/
	private function httpRequest($url, $data = ""){
		$curl = curl_init();
		curl_setopt($curl, CURLOPT_URL, $url);
		curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
		curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
		if(!empty($data)){ //判断是否为POST请求
			curl_setopt($curl, CURLOPT_POST, 1);
			curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
		}
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
		$output = curl_exec($curl);
		curl_close($curl);
		return $output;
	}
	
	/***
     * XML转数组
     * @url XML
     * @return 数组
     **/
	private function xmlToArray($xml){
		if(!$xml){
			echo "xml数据异常！";
			exit;
		}
        libxml_disable_entity_loader(true);
        $arr = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
		return $arr;
	}
	
	/***
     * 获取jsapi支付参数
     * @data 请求微信返回的数据
     * @return JSON
     **/
	private function getJsApiParameters($data){
		$timeStamp = time();
		$jsapi["appId"]     = $this->appid;
		$jsapi["nonceStr"]  = $this->getNonceStr();
		$jsapi["timeStamp"] = "$timeStamp";
		$jsapi["signType"]  = "MD5";
		$jsapi["package"]   = "prepay_id=".$data["prepay_id"];
		$jsapi["paySign"]   = $this->getSign($jsapi);
		$jsApiParameters    = json_encode($jsapi);
		return $jsApiParameters;
	}
	
	/***
	 * 支付成功回调函数
	 **/
	public function callback(){
		$callbackXml = file_get_contents('php://input');
		$data = json_decode(json_encode(simplexml_load_string($callbackXml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
		$callbackSign = $data['sign'];
		unset($data['sign']);
		$sign = $this->getSign($data);
		if($sign == $callbackSign){
			//这里更新你的订单状态
			//根据$data['attach']获取订单信息，更新订单状态
			$returnXml = '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
			echo returnXml;
		}
	}
	
	/***
     * 生成随机数
     * @length 随机字符串长度（默认32位）
     * @return
     **/
	private function getNonceStr($length = 32) {
		$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
		$str   = "";
		for ( $i = 0; $i < $length; $i++ )  {
			$str .= substr($chars, mt_rand(0, strlen($chars)-1), 1);
		}
		return $str;
	}
}

native.php：

<?php
	require_once('WxPayJsApi.php');
	$wxPayJsApi = new WxPayJsApi();
	$data = array('body'=>'test', 'total_fee'=>1, 'openid'=>'ocjhx1234XleGHi4n21fdNArvYWk', 'orderId'=>'168');
	$native = $wxPayJsApi->native($data);
?>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/> 
<title>微信扫码支付样例</title>
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/jquery.qrcode.js"></script>
</head>
<body>
    <div style="width:220px;margin:0 auto;text-align:center;">
		请使用微信“扫一扫”<br/> 扫描码二维码支付
		<div id="qrcode"></div>
	</div>
	<script type="text/javascript">
		$(document).ready(function(){
			$("#qrcode").qrcode({render: "table", text: "<?=$native['code_url']?>", size: 220});
		});
		//支付成功后，回调函数更新订单状态
		//设置定时任务，请求判断订单状态是否更新，进行页面跳转
		setInterval("callBack()",2000);
		function callBack(){
			$.post("请求的url", {orderId:"<?=$data['orderId']?>"},function(data){
				if(data.trade_status=="SUCCESS"){
					alert("支付成功");
					window.location.href = "跳转至支付成功页面";
				}
			}, "json");
		}
	</script>
</body>
</html>

Demo下载：wxpay.zip