php/app/validate/api/PaymentCreate.php

<?php

namespace app\validate\api;

use think\Validate;

class PaymentCreate extends Validate
{
    protected $rule = [
        'order_no|订单号'     => 'require',
        'pay_amt|交易金额'     => 'require',
        'goods_title|商品标题' => 'require',
        'goods_desc|商品描述'  => 'require',
        'notify_url|回调地址'  => 'require',
        'pay_type|支付方式'    => 'require',
    ];
}