快速实现支付宝支付及验签

话不多说，直接上代码

首先，进入支付宝文档中心，下载通用版SDK

https://opendocs.alipay.com/open/02np93

// Client
public function createAopClient()
{
    $aop = new \AopClient();
    $aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';
    $aop->appId = 'APPID';
    $aop->rsaPrivateKey = '私钥';
    $aop->alipayrsaPublicKey = '公钥';
    $aop->apiVersion = '1.0';
    $aop->signType = 'RSA2';
    $aop->postCharset = 'UTF-8';
    $aop->format = 'json';
    return $aop;
}
// 支付
public function alipayTradeWapPayRequest(){
    $aop = $this->createAopClient();
    $request = new \AlipayTradeWapPayRequest();
    $info = [
        'body' => 'xxx',
        'subject' => '标题', 
        // 商户网站唯一订单号，自定义的订单号
        'out_trade_no' => time().rand(1111,9999),  
        'total_amount' => 1
    ];
    $info = json_encode($info, JSON_UNESCAPED_UNICODE);
    $request->setNotifyUrl('异步通知的URL');
    $request->setReturnUrl('同步返回URL');
    $request->setBizContent($info);
    //这里和普通的接口调用不同，使用的是sdkExecute
    $result = $aop->pageExecute($request);
}
// 回调验签
public function checkSign($param = [])
{
    $app = new \AopClient();
    $app->alipayrsaPublicKey = '公钥';
    $res = $app->rsaCheckV1($param, '私钥', 'RSA2');
    return $res;
}

完