支付宝企业付款PHP版本（转账到支付宝账户）

第一步需要将支付宝SDK下载放在vendor，并且重命名为“Alipay”

下一步直接上代码：

/**
  * 单笔转账接口
  * @param $order_number 订单号
  * @param $pay_name  转账用户名
  * @param $pay_no  转账账号
  * @param $amount  转账金额
  * @param $memo   备注
  */
function alipay_transfer($order_number,$pay_name,$pay_no,$amount,$memo="用户提现"){
    $item = db('setting')->where('id',1)->find();
    $item = json_decode($item['data'],true);
    $payer_name = $item['app_name'];
    vendor("Alipay.AopClient"); //引入sdk
    vendor("Alipay.request.AlipayFundTransToaccountTransferRequest"); //引入sdk
    $aop = new \AopClient ();
    $aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';
    $aop->appId = $item['app_id'];//支付宝APPID
    $aop->rsaPrivateKey = $item['private_key'];//应用私钥
    $aop->alipayrsaPublicKey=$item['public_key'];//支付宝公钥
    $aop->apiVersion = '1.0';
    $aop->signType = 'RSA2';
    $aop->postCharset='UTF-8';
    $aop->format='json';
    $request = new \AlipayFundTransToaccountTransferRequest ();
    $request->setBizContent("{" .
        "\"out_biz_no\":\"".$order_number."\"," .//商户生成订单号
        "\"payee_type\":\"ALIPAY_LOGONID\"," .//收款方支付宝账号类型
        "\"payee_account\":\"".$pay_no."\"," .//收款方账号
        "\"amount\":\"".$amount."\"," .//总金额
        "\"payer_show_name\":\"".$payer_name."\"," .//付款方账户
        "\"payee_real_name\":\"".$pay_name."\"," .//收款方姓名
        "\"remark\":\"".$memo."\"" .//转账备注
    "}");
    $result = $aop->execute ($request);
    $responseNode = str_replace(".", "_", $request->getApiMethodName()) . "_response";
    $resultCode = $result->$responseNode->code;
    //修改转账日志
    if(!empty($resultCode)&&$resultCode == 10000){
        //转账成功处理返回
        return "";
    } else {
        //转账失败原因提示
        return $result->$responseNode->sub_msg;
    }
 }