TP微信扫二维码支付接口开发

admin_email 2017-05-26 05:27:56

求大神指教怎么弄啊本人新手最近给一个商城做一个微信扫码支付功能

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admin_email 2017-05-27

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谢谢！我想问一下你这用的是TP框架吗

林0507 2017-05-26

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之前写的一个项目里也有用到生成微信支付二维码， $wechat = new WechatPay(appid,wechat_mchid, wechat_key); $result = $wechat->sendPay(订单号, 价格,名称, 回调地址,id); 你参考下吧，里面一些公共的方法自行替换，二维码url就在$result['code_url']。获取到后用qrcode生成二维码就可以了 Common::getRandChar(32); 是取32位随机字符串 Common::https_request是curl操作就不贴代码了

class WechatPay{
    protected $wechat_appid;
    protected $wechat_mchid;
    protected $wechat_key;

    function __construct($wechat_appid, $wechat_mchid, $wechat_key) {
        $this->wechat_appid = $wechat_appid;
        $this->wechat_mchid = $wechat_mchid;
        $this->wechat_key = $wechat_key;
    }

    public function sendPay($out_trade_no, $total_fee, $subject, $notifyUrl, $id = 0) {
        $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
        $nonce_str = Common::getRandChar(32);   //随机字符串，长度要求在32位以内。
        $param = [
            'appid' => $this->wechat_appid,
            'mch_id' => $this->wechat_mchid,
            'nonce_str' => $nonce_str,
            'body' => $subject,
            'out_trade_no' => $out_trade_no,
            'total_fee' => $total_fee,
            'spbill_create_ip' => '127.0.0.1',
            'notify_url' => $notifyUrl,
            'trade_type' => 'NATIVE',
            'product_id' => $id,
        ];
        $xml = self::paySign($param, $this->wechat_key);
        $http_result = Common::https_request($url, $xml['xml']);
        $xml = simplexml_load_string($http_result, NULL, LIBXML_NOCDATA);
        $result = json_decode(json_encode($xml), true);
        if($result['return_code'] == 'FAIL'){
            return ['result_code' => 'FAIL'];
        }
        return $result;
    }


    // 支付签名
    public static function paySign($param, $wechatkey) {
        ksort($param);
        $stringSignTemp = '';
        $xml = '<xml>';
        foreach ($param as $key => $vo) {
            $stringSignTemp .= $key . '=' . $vo . '&';
            $xml .= '<' . $key . '>' . $vo . '</' . $key . '>';
        }
        //  $stringSignTemp = rtrim($stringSignTemp,"&");
        $stringSignTemp .= 'key=' . $wechatkey;
        $sign = strtoupper(md5($stringSignTemp));
        $xml .= '<sign>' . $sign . '</sign>';
        $xml .= '</xml>';
        $result_arr = [
            'sign' => $sign,
            'xml' => $xml
        ];
        return $result_arr;
    }

}