tp5微信app支付

微信支付服务端(支付类的封装)

支付时实例化该类,调用pay方法即可(需要传参数)

文中需要改动参数值为 $appid $mch_id 还有sign方法中的 key 改成自己的秘钥 $stringSignTemp = $stringA.’&key=’.‘66666666666666664564654444412’; //申请支付后有给予一个商户账号和密码，登陆后自己设置key
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namespace app\api\controller;

use think\Db;

class WxPay{
    public function pay($body_name='',$order_number='',$fee='') {
     
        $appid = '123456789'; //应用的appid
        $mch_id = '155999999'; // 您的商户账号
        $nonce_str = $this -> nonce_str(); //随机字符串
        $body = $body_name; // 举例: 服务预约
        $out_trade_no = $order_number; //商户订单号
        $total_fee = $fee*100;
        $spbill_create_ip = '122.114.62.70'; // IP白名单
        $notify_url = 'http://app.ggg.com/api/Notify/Wx_notify'; // 回调的url【自己填写,如若回调不成功请注意查看服务器是否开启防盗链,回调地址用http】
        $trade_type = 'APP'; //交易类型 默认

            //这里是按照顺序的 因为下面的签名是按照顺序 排序错误 肯定出错

            $post['appid'] = $appid;
            $post['body'] = $body;
            $post['mch_id'] = $mch_id;
            $post['nonce_str'] = $nonce_str; //随机字符串
            $post['notify_url'] = $notify_url;
            $post['out_trade_no'] = $out_trade_no;
            $post['spbill_create_ip'] = $spbill_create_ip; //终端的ip
            $post['total_fee'] = $total_fee; //总金额 最低为一块钱 必须是整数
            $post['trade_type'] = $trade_type;
            $sign = $this -> sign($post); //签名

            $post_xml = "
                           $appid]]>
                           $body]]>
                           $mch_id]]>
                           $nonce_str]]>
                           $notify_url]]>
                           $out_trade_no]]>
                           $spbill_create_ip]]>
                           $total_fee]]>
                           $trade_type]]>
                           $sign]]>
                        ";

            //统一接口prepay_id

            $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
            $xml = $this -> http_request($url, $post_xml);

            $array = $this -> xml($xml); //全要大写
//            dump($array);die;
            if ($array['RETURN_CODE'] == 'SUCCESS' && $array['RESULT_CODE'] == 'SUCCESS') {
                $time = time();
                $tmp = []; //临时数组用于签名
                $tmp['appid'] = $appid;
                $tmp['noncestr'] = $nonce_str;
                $tmp['package'] = 'Sign=WXPay';
                $tmp["partnerid"] = $mch_id;
                $tmp['prepayid'] = $array['PREPAY_ID'];
                $tmp['timestamp'] = "$time";

                $data['appid'] = $appid;
                $data['noncestr'] = $nonce_str; //随机字符串
//                $data['package'] = 'prepay_id='.$array['PREPAY_ID']; //统一下单接口返回的 prepay_id 参数值，提交格式如：prepay_id=*
                $data['package'] = "Sign=WXPay";
                $data['partnerid']= $mch_id;
                $data['prepayid'] = $array['PREPAY_ID'];
                $data['timestamp'] = "$time"; //时间戳
                $data['sign'] = $this ->sign($tmp);//签名

            } else {
                $data['status'] = 0;
                $data['text'] = "错误";
                $data['RETURN_CODE'] = $array['RETURN_CODE'];
                $data['RETURN_MSG'] = $array['RETURN_MSG'];
            }
            return json_encode($data);
        }

    public function sign($data,$wx_key)
    {
    //签名 $data要先排好顺序
        $stringA = '';
        ksort($data);
        foreach($data as $key => $value) {
            if (!$value) continue;
            if ($stringA)
                $stringA.= '&'.$key."=".$value;
            else
                $stringA = $key."=".$value;
            }

        $stringSignTemp = $stringA.'&key='.'66666666666666664564654444412'; //申请支付后有给予一个商户账号和密码，登陆后自己设置key
        return strtoupper(md5($stringSignTemp));
    }


    //随机32位字符串
    private function nonce_str() {
        $result = '';
        $str = 'QWERTYUIOPASDFGHJKLZXVBNMqwertyuioplkjhgfdsamnbvcxz';
        for ($i = 0; $i < 32; $i++) {
            $result.= $str[rand(0, 48)];
            }
        return $result;
    }

    //curl请求啊
    public function http_request($url, $data = null, $headers = array()) {
        $curl = curl_init();
        if (count($headers) >= 1) {
            curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
        }
        curl_setopt($curl, CURLOPT_URL, $url);

        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);

        if (!empty($data)) {
            curl_setopt($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;
    }

    //获取xml
    private function xml($xml) {
        $p = xml_parser_create();
        xml_parse_into_struct($p, $xml, $vals, $index);
        xml_parser_free($p);
        $data = "";
        foreach($index as $key => $value) {
            if ($key == 'xml' || $key == 'XML') continue;
            $tag = $vals[$value[0]]['tag'];
            $value = $vals[$value[0]]['value'];
            $data[$tag] = $value;
        }
        return $data;
    }
}

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