PHP微信三方平台-代公众号发起微信支付（jsAPI）

一、前期准备工作

1、微信公众号需要开通微信支付认证将获取的秘钥给三方平台

2、添加支付回调域名地址：填写三方平台域名地址即可（最多5个）

二、代码demo

1、完成支付类

<?php

/**

 * Created by PhpStorm.

 * User: Administrator

 * Date: 2017/9/20 0020

 * Time: 17:25

 */

namespace app\models;

class Payment

{

    public static function WxPayInit($body, $trade_no, $total_fee, $open_id, $notify_url, $attach = [])

    {

        $post_params = [

            'body' => $body,

            'trade_no' => $trade_no,

            'total_fee' => $total_fee * 100,

            'open_id' => $open_id,

            'attach' => $attach,

            'notify_url' => \Yii::$app->request->hostInfo . \Yii::$app->request->scriptUrl . $notify_url

        ];

        return self::WxPay($post_params);

    }

    public static function WxPay($data)

    {

        $hywx_test = \Yii::$app->params['hywx_test'];

        $pay_config = [

            'APPID' => $hywx_test['app_id'],

            'MCHID' => $hywx_test['mch_id'],

            'MCHKEY' => $hywx_test['mch_key']

        ];

        $attach = json_encode($data['attach']);

        $input = new \WxPayUnifiedOrder();

        $input->SetBody($data['body']);

        $input->SetAttach($attach);

        $input->SetOut_trade_no($data['trade_no']);

        $input->SetTotal_fee($data['total_fee']);

        $input->SetTime_start(date("YmdHis"));

        $input->SetTime_expire(date("YmdHis", time() + 600));

        $input->SetNotify_url($data['notify_url']);

        $input->SetTrade_type("JSAPI");

        $input->SetOpenid($data['open_id']);

        $result = \WxPayApi::unifiedOrder($input, $pay_config);

        if ($result['result_code'] == 'SUCCESS' && $result['return_code'] == 'SUCCESS') {

            $jsapi = new  \WxPayJsApiPay();

            $jsapi->SetAppid($result["appid"]);

            $timeStamp = time();

            $jsapi->SetTimeStamp("$timeStamp");

            $jsapi->SetNonceStr(\WxPayApi::getNonceStr());

            $jsapi->SetPackage("prepay_id=" . $result['prepay_id']);

            $jsapi->SetSignType("MD5");

            $jsapi->SetPaySign($jsapi->MakeSign( $hywx_test['mch_key']));

            return $parameters = $jsapi->GetValues();

        }

    }

}

2、支付请求方法

require_once dirname(dirname(__FILE__)) . '/librarys/wx/wx_pay/lib/WxPay.Api.php';

require_once dirname(dirname(__FILE__)) . '/librarys/wx/wx_pay/lib/WxPay.Config.php';

require_once dirname(dirname(__FILE__)) . '/librarys/wx/wx_pay/lib/WxPay.NativePay.php';

    public function actionTest()

    {

        $body = '欧式body';

        $order_code = 'HY' . date('YmdHis');

        $total_fee = 0.01;

        $open_id = 'or-9g0kq0_p4FxCLMAWPg4ZPYX0k';//用户open_id

        $notify_url = '/site/test-call-back';//回调地址

        $jsApiParameters = Payment::WxPayInit($body, $order_code, $total_fee, $open_id, $notify_url);

        $return_arr = [];

        $return_arr['trade_no'] = $order_code;

        $return_arr['jsApiParameters'] = $jsApiParameters;

        return $this->renderJson($return_arr);

    }

3、支付页面

<?php

/**

 * Created by PhpStorm.

 * User: LiDingLie

 * Date: 2017/10/18 0018

 * Time: 11:28

 */

use yii\helpers\Url;

$web = Url::base();

$this->title = '订单支付';

$url = \app\librarys\Tools::urlBase();

?>

<a href="javascript:" onclick="pay()" class="zf_btn">确定支付</a>

<script type="text/javascript" src="<?= $web ?>/js/jweixin-1.0.0.js"></script>

<script type="text/javascript">

    function pay() {

        var baseUrl = '<?=$url?>';

        requestJson(baseUrl + '/site/test', {}, true, function (response) {

            if (response.status == 0) {

                trade_no = response.data.trade_no;

                var jsApiData = response.data.jsApiParameters;

//                var wechat = JSON.parse(jsApiData);

                callpay(jsApiData);

            } else {

                layer.msg(response.message);

            }

        });

    }

    function callpay(wechat) {

        if (typeof WeixinJSBridge == "undefined") {

            if (document.addEventListener) {

                document.addEventListener('WeixinJSBridgeReady', jsApiCall, false);

            } else if (document.attachEvent) {

                document.attachEvent('WeixinJSBridgeReady', jsApiCall);

                document.attachEvent('onWeixinJSBridgeReady', jsApiCall);

            }

        } else {

            jsApiCall(wechat);

        }

    }

    function pollCode(wechat) {

        var order_code = wechat.order_code;

        var data = {};

        data.order_code = order_code;

    }

    function jsApiCall(wechat) {

        WeixinJSBridge.invoke('getBrandWCPayRequest', {

            'appId': wechat.appId,

            'timeStamp': wechat.timeStamp,

            'nonceStr': wechat.nonceStr,

            'package': wechat.package,

            'signType': wechat.signType,

            'paySign': wechat.paySign

        }, function (res) {

            if (res.err_msg == 'get_brand_wcpay_request:ok') {

                is_allow_pay = false;

//                js轮训查询 是否支付成功

                var setInt = setInterval(function () {

                    pollCode(wechat);

                }, 1000);

            } else if (res.err_msg == 'get_brand_wcpay_request:cancel') {

                layer.msg('取消支付成功');

                //取消订单，作废报名记录

                cancelPayTicketHandler(wechat.order_code);

            } else {

                layer.msg(res.err_msg);

            }

        });

    }

</script>

PHP微信三方平台-代公众号发起微信支付（jsAPI）的相关教程结束。