'decimal:2', 'invoice_date' => 'date', ]; public static function columnLabels(): array { return [ 'store' => '店铺', 'seller_name' => '销售方名称', 'seller_tax_no' => '销售方税号', 'buyer_name' => '购买方名称', 'buyer_tax_no' => '购买方税号', 'invoice_amount' => '开票金额', 'invoice_category' => '类目', 'invoice_type' => '开票类型', 'invoice_date' => '开票日期', ]; } }