Implement WeChat scan code payment php code sharing

Scan QR code payment has become a popular method of transaction. In this article, we mainly share with you the php code to implement WeChat scan QR code payment, hoping to help everyone.

1. You need to use WeChat to scan the QR code to pay,
payment file pay.php

<?phpinclude("../../../config/conn.php");//数据库//sql先插入订单到数据库//读取订单号//$ddbh="测试订单号";///直接访问本页面测试ini_set(&#39;date.timezone&#39;,&#39;Asia/Shanghai&#39;);$mchid = &#39;149651642&#39;;          //微信支付商户$appid = &#39;wxc35486954de04f5&#39;;  //公众号APPID $apiKey = &#39;6ac2b9ef5a7c1190&#39;;//设置API密钥$wxPay = new WxpayService($mchid,$appid,$apiKey);$outTradeNo = $ddbh;     //你商城的商品订单号$payAmount = 1;          //金额，单位:元$orderName = &#39;wxpay&#39;;    //订单标题$notifyUrl = weburl."notify.php";     //付款成功后的回调地址(不要有问号),可直接放根目录$payTime = time(); 
$arr = $wxPay->createJsBizPackage($payAmount,$outTradeNo,$orderName,$notifyUrl,$payTime);//生成二维码$url2 = $arr[&#39;code_url&#39;];//echo "<img  src="/static/imghwm/default1.png"  data-src="<?=weburl? alt="Implement WeChat scan code payment php code sharing" >tem/getqr.php?u=<?=urlencode($url2)?>&size=9"  class="lazy"  src=&#39;{$url}&#39; style=&#39;width:300px;&#39;>";class WxpayService{
    protected $mchid;    protected $appid;    protected $apiKey;    public function __construct($mchid, $appid, $key)
    {
        $this->mchid = $mchid;        $this->appid = $appid;        $this->apiKey = $key;
    }    /**
     * 发起订单
     * @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 $timestamp 订单发起时间
     * @return array
     */
    public function createJsBizPackage($totalFee, $outTradeNo, $orderName, $notifyUrl, $timestamp)
    {
        $config = array(            &#39;mch_id&#39; => $this->mchid,            &#39;appid&#39; => $this->appid,            &#39;key&#39; => $this->apiKey,
        );        //$orderName = iconv(&#39;GBK&#39;,&#39;UTF-8&#39;,$orderName);
        $unified = array(            &#39;appid&#39; => $config[&#39;appid&#39;],            &#39;attach&#39; => &#39;pay&#39;,             //商家数据包，原样返回，如果填写中文，请注意转换为utf-8
            &#39;body&#39; => $orderName,            &#39;mch_id&#39; => $config[&#39;mch_id&#39;],            &#39;nonce_str&#39; => self::createNonceStr(),            &#39;notify_url&#39; => $notifyUrl,            &#39;out_trade_no&#39; => $outTradeNo,            &#39;spbill_create_ip&#39; => &#39;127.0.0.1&#39;,            &#39;total_fee&#39; => intval($totalFee * 100),       //单位 转为分
            &#39;trade_type&#39; => &#39;NATIVE&#39;,
        );        $unified[&#39;sign&#39;] = self::getSign($unified, $config[&#39;key&#39;]);        $responseXml = self::curlPost(&#39;https://api.mch.weixin.qq.com/pay/unifiedorder&#39;, self::arrayToXml($unified));        $unifiedOrder = simplexml_load_string($responseXml, &#39;SimpleXMLElement&#39;, LIBXML_NOCDATA);        if ($unifiedOrder === false) {            die(&#39;parse xml error&#39;);
        }        if ($unifiedOrder->return_code != &#39;SUCCESS&#39;) {            die($unifiedOrder->return_msg);
        }        if ($unifiedOrder->result_code != &#39;SUCCESS&#39;) {            die($unifiedOrder->err_code);
        }        $codeUrl = (array)($unifiedOrder->code_url);        if(!$codeUrl[0]) exit(&#39;get code_url error&#39;);        $arr = array(            "appId" => $config[&#39;appid&#39;],            "timeStamp" => $timestamp,            "nonceStr" => self::createNonceStr(),            "package" => "prepay_id=" . $unifiedOrder->prepay_id,            "signType" => &#39;MD5&#39;,            "code_url" => $codeUrl[0],
        );        $arr[&#39;paySign&#39;] = self::getSign($arr, $config[&#39;key&#39;]);        return $arr;
    }    public function notify()
    {
        $config = array(            &#39;mch_id&#39; => $this->mchid,            &#39;appid&#39; => $this->appid,            &#39;key&#39; => $this->apiKey,
        );        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];        $postObj = simplexml_load_string($postStr, &#39;SimpleXMLElement&#39;, LIBXML_NOCDATA);        if ($postObj === false) {            die(&#39;parse xml error&#39;);
        }        if ($postObj->return_code != &#39;SUCCESS&#39;) {            die($postObj->return_msg);
        }        if ($postObj->result_code != &#39;SUCCESS&#39;) {            die($postObj->err_code);
        }        $arr = (array)$postObj;        unset($arr[&#39;sign&#39;]);        if (self::getSign($arr, $config[&#39;key&#39;]) == $postObj->sign) {            echo &#39;<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>&#39;;            return $postObj;
        }
    }    /**
     * curl get
     *
     * @param string $url
     * @param array $options
     * @return mixed
     */
    public static function curlGet($url = &#39;&#39;, $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 = &#39;&#39;, $postData = &#39;&#39;, $options = array())
    {
        if (is_array($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 = &#39;abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789&#39;;        $str = &#39;&#39;;        for ($i = 0; $i < $length; $i++) {            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }        return $str;
    }    public static function arrayToXml($arr)
    {
        $xml = "<xml>";        foreach ($arr as $key => $val) {            if (is_numeric($val)) {                $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
            } else
                $xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
        }        $xml .= "</xml>";        return $xml;
    }    /**
     * 获取签名
     */
    public static function getSign($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 . "&";
            }
        }        $reqPar = &#39;&#39;;        if (strlen($buff) > 0) {            $reqPar = substr($buff, 0, strlen($buff) - 1);
        }        return $reqPar;
    }
}?><html><head><meta http-equiv="content-type" content="text/html;charset=utf-8"/><meta name="viewport" content="width=device-width, initial-scale=1" /> <title><?=$g_webname?>微信支付</title><input type="hidden" id="wpay" value="<?php echo  $url2; ?>"/></head><body><img  src="/static/imghwm/default1.png"  data-src="<?=weburl? alt="Implement WeChat scan code payment php code sharing" >tem/getqr.php?u=<?=urlencode($url2)?>&size=9"  class="lazy"    style="max-width:90%" /></body></html>

2. Callback file notify.php

<?phpinclude("../../../config/conn.php");

ini_set(&#39;date.timezone&#39;,&#39;Asia/Shanghai&#39;);
error_reporting(0);$mchid = &#39;149651542&#39;;          //微信支付商户号$appid = &#39;wxc35486954de04f5&#39;;  //公众号APPID$apiKey = &#39;6ac2b9e5&#39;;   //API密钥$wxPay = new WxpayService($mchid,$appid,$apiKey);$result = $wxPay->notify();//file_put_contents(&#39;2.txt&#39;,json_encode($result));//测试结果//$result[&#39;transaction_id&#39;]为微信交易号 if($result){    if(array_key_exists("return_code", $result)
&& array_key_exists("result_code", $result)&& $result["return_code"] == "SUCCESS"&& $result["result_code"] == "SUCCESS"){    //file_put_contents(&#39;1.txt&#39;,1);$sj=date("Y-m-d H:i:s");$uip=$_SERVER["REMOTE_ADDR"];$sql="select * from yjcode_dingdang where bh=&#39;".$result[&#39;out_trade_no&#39;]."&#39; and ifok=0";mysql_query("SET NAMES &#39;GBK&#39;");$res=mysql_query($sql);if($row=mysql_fetch_array($res)){
 updatetable("yjcode_dingdang","sj=&#39;".$sj."&#39;,uip=&#39;".$uip."&#39;,alipayzt=&#39;TRADE_SUCCESS&#39;,ddzt=&#39;交易成功&#39;,ifok=1 ,wxddbh=".$result[&#39;transaction_id&#39;]." where id=".$row[id]); $money1=$row[&#39;money1&#39;];
 PointIntoM($row[&#39;userid&#39;],"微信充值".$money1."元",$money1);
 PointUpdateM($row[userid],$money1);
}            return true;
        }


}else{    echo &#39;pay error&#39;;
}class WxpayService{
    protected $mchid;    protected $appid;    protected $apiKey;    public function __construct($mchid, $appid, $key)
    {
        $this->mchid = $mchid;        $this->appid = $appid;        $this->apiKey = $key;
    }    public function notify()
    {
        $config = array(            &#39;mch_id&#39; => $this->mchid,            &#39;appid&#39; => $this->appid,            &#39;key&#39; => $this->apiKey,
        );        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];        $postObj = simplexml_load_string($postStr, &#39;SimpleXMLElement&#39;, LIBXML_NOCDATA);        if ($postObj === false) {            die(&#39;parse xml error&#39;);
        }        if ($postObj->return_code != &#39;SUCCESS&#39;) {            die($postObj->return_msg);
        }        if ($postObj->result_code != &#39;SUCCESS&#39;) {            die($postObj->err_code);
        }        $arr = (array)$postObj;        unset($arr[&#39;sign&#39;]);        if (self::getSign($arr, $config[&#39;key&#39;]) == $postObj->sign) {            echo &#39;<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>&#39;;            return $arr;
        }
    }    /**
     * 获取签名
     */
    public static function getSign($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 . "&";
            }
        }        $reqPar = &#39;&#39;;        if (strlen($buff) > 0) {            $reqPar = substr($buff, 0, strlen($buff) - 1);
        }        return $reqPar;
    }
}

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