ecshop 東方支付對接到跨境系統，常用的有2個支付接口（微信支付寶以及微信公眾號支付接口），一個海關接口

通過post固定數據，并且加簽傳值

微信支付寶調用的接口大同小異。

主要代碼有（微信和支付寶返回信息不一樣，微信返回是二維碼圖，支付寶是一串URL，需要自行生成二維碼）

$mrchntCode = 'XXXXXX';//商戶號 111111111
$outOrderNo = $order['order_sn'];
//$add_time = date("YmdHis",$order['add_time']);
$add_time = date("YmdHis",gmtime());
$ptime = date("Y-m-d\TH:i:s");
$order_total = $order['order_amount'];//總價order_amount	total_fee
$msgContent ='{"trxCd":"1302","outOrderNo":"'.$outOrderNo.'","outOrderTime":"'.$add_time.'","mrchntCode":"'.$mrchntCode.'","trxCcyCd":"CNY","trxAmt":"'.$order_total.'","goodsName":"'.$order_g_name.'","frontUrl":"","backUrl":"http://www.adamlancelot.com/easipay.php?act=respond","payMethod":"3","productType":"SCAN","tradeType":"aggregate","remoteIp":"","areaInfo":"1561234"}';
$msgContent = encrypt($msgContent,$pub_key);
$signValue = getSign($msgContent, $sh_siyao);//加簽
$json = '{"msgVersion": "1.0","msgCode": "QR_PAY","msgSerialNo": "'.$order['order_sn'].'","msgSender": "XXXXXX","msgSenderKey": "XXXXXX_key","timestamp":"'.$ptime.'","msgContent":"'.$msgContent.'","sign": {"signType": "RSA","signValue":"'.$signValue.'"},"encryptType": "RSA"}';
$sign[sign_type]= 'md5';
$sign[version]	= '1.0';		
ksort($sign);
$sign[appsecret]= 'XXXXX000000';//密鑰		
$link = '';
foreach($sign as $key=> $val){
	if($val){
		$link .= ($key."=".strtolower($val)."&");//strtolower
	}
}
$link = rtrim($link, "&");//簽名OK		
$sign[sign] = md5($link);		
unset($sign[appsecret]);//注銷掉
$url = 'https://api.easipay.net/scan/order/precreate';//正式接口
$headers ="Content-Type: application/json; charset=utf-8";
$text = $Http->doPost($url,$json,4,$headers);		
$text = json_decode($text,true);
$respons = decrypt3($text['body'],$key_path);
$respons = json_decode($respons,true);