关于验证的问题
老师这段验证规则的中间那个空数组代表啥意思啊?
$data = $this->validate($request, [
'express_company' => ['required'],
'express_no' => ['required'],
], [], [
'express_company' => '物流公司',
'express_no' => '物流单号',
]);
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