【微信接入网联支付】网联统一支付接口之微信支付

1、背景：2018年，第三方支付机构（支付宝、微信、百度钱包等）应国家要求，必须接入网联支付接口api

2、目的：以【微信jsapi】公众号支付为demo，讲解微信jsapi支付接入网联支付api，实现支付成功

3、代码：$record[\'uniontid\'] 自己填写

function doMobilelist3(){
                $post_data[\'msgSrc\']=\'WWW.***.COM\';
                $post_data[\'requestTimestamp\']=date(\'Y-m-d H:i:s\');
                $post_data[\'mid\']=\'8***\';
                $post_data[\'tid\']=\'5****2\';
                $post_data[\'instMid\']=\'Y***T\';
                $post_data[\'msgType\']=\'WXPay.jsPay\';
                $post_data[\'msgSrcId\']=\'*****\';
                $post_data[\'merOrderId\']=$post_data[\'msgSrcId\'].$record[\'uniontid\'];

                    $post_data[\'totalAmount\']=$params[\'fee\']*100;

//                $post_data[\'totalAmount\']=1;
                $post_data[\'notifyUrl\']=$_W[\'siteroot\'].\'app\'.ltrim($this->createMobileUrl(\'notfiy\'),\'.\');
                $post_data[\'returnUrl\']=$_W[\'siteroot\'].\'app\'.ltrim($this->createMobileUrl(\'list\'),\'.\');
                $post_data[\'expireTime\']=date(\'Y-m-d H:i:s\',time()+3*60);
                $key=\'****\';
                $post_data[\'sign\']=$this->makemd5($post_data,$key);
                $path=\'https://qr.chinaums.com/netpay-portal/webpay/pay.do\';

$this->createform($post_data,$path,$charset=\'UTF-8\',\'get\');  

}

/*
         * 银联支付创建签名
         */
        private function makemd5($post_data,$key){
            ksort($post_data);
            $sign=  strtoupper(md5(urldecode(http_build_query($post_data)).$key));
            return $sign;
        }

    private function createform($data,$submitUrl,$charset=\'UTF-8\',$method=\'POST\'){
        $inputstr = "";
        foreach($data as $key=>$v){
            $inputstr .= \'<input type="hidden"  id="\'.$key.\'" name="\'.$key.\'" value="\'.$v.\'"/>\';
        }
        
        $form = \'<form action="\'.$submitUrl.\'" name="pay" id="pay" method="\'.$method.\'" accept-charset="\'.$charset.\'" onsubmit="document.charset=\\'\'.$charset.\'\\';">\';
        $form.=    $inputstr;
        $form.=    \'</form>\';
        
        $html = \'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
                <html xmlns="http://www.w3.org/1999/xhtml">
                <head>
                <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
                <title>请不要关闭页面,支付跳转中.....</title>
                </head>
                <body>\';
        $html.=    $form;
        $html.=    \'<script type="text/javascript">
                    document.getElementById("pay").submit();
                 </script>\';
        $html.= \'</body>
                 </html>\';
        print_r($html);exit;         
        Mheader(\'utf-8\');
        echo $html;
        exit;
    }