respect-validation/docs/validators/Nip.md
Alexandre Gomes Gaigalas 16148e9593 Standardize and improve validation message templates
- Remove redundant "valid" prefix:
   Date, DateTime, DateTimeDiff, Domain, Email, Iban, Imei, Ip, Isbn, Json, LanguageCode, LeapDate, LeapYear, Luhn, MacAddress, NfeAccessKey, Nif, Nip, Pesel, Phone, Pis, PolishIdCard, PostalCode, Roman, Slug, Tld, Url, Uuid, Version.

 - Remove redundant "value" suffix
   ArrayVal, BoolVal, Countable, FloatVal, IntVal, IterableVal, NumericVal, ScalarVal, StringVal.

 - Standardize "consist only of" phrasing
   Alnum, Alpha, Cntrl, Consonant, Digit, Graph, Lowercase, Printable, Punct, Space, Spaced, Uppercase, Vowel, Xdigit.

 - Improve file accessibility messages
   Directory, Executable, File, Image, Readable, SymbolicLink, Writable.

 - Improve grammar and article usage
   CreditCard, Extension, Mimetype, Regex, Size.
2026-02-03 19:58:55 +00:00

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<!--
SPDX-License-Identifier: MIT
SPDX-FileCopyrightText: (c) Respect Project Contributors
SPDX-FileContributor: Alexandre Gomes Gaigalas <alganet@gmail.com>
SPDX-FileContributor: Henrique Moody <henriquemoody@gmail.com>
-->
# Nip
- `Nip()`
Validates whether the input is a Polish VAT identification number (NIP).
```php
v::nip()->assert('1645865777');
// Validation passes successfully
v::nip()->assert('1645865778');
// → "1645865778" must be a Polish VAT identification number
v::nip()->assert('1234567890');
// → "1234567890" must be a Polish VAT identification number
v::nip()->assert('164-586-57-77');
// → "164-586-57-77" must be a Polish VAT identification number
v::nip()->assert('164-58-65-777');
// → "164-58-65-777" must be a Polish VAT identification number
```
## Templates
### `Nip::TEMPLATE_STANDARD`
| Mode | Template |
| ---------: | :--------------------------------------------------------- |
| `default` | {{subject}} must be a Polish VAT identification number |
| `inverted` | {{subject}} must not be a Polish VAT identification number |
## Template placeholders
| Placeholder | Description |
| ----------- | ---------------------------------------------------------------- |
| `subject` | The validated input or the custom validator name (if specified). |
## Categorization
- Identifications
## Changelog
| Version | Description |
| ------: | :---------------- |
| 3.0.0 | Templates changed |
| 2.0.0 | Created |
## See Also
- [Pesel](Pesel.md)
- [PolishIdCard](PolishIdCard.md)
- [SubdivisionCode](SubdivisionCode.md)