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respect-validation/docs/validators/Extension.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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Extension

  • Extension(string $extension)

Validates if the file extension matches the expected one:

v::extension('png')->assert('image.png');
// Validation passes successfully

This validator is case-sensitive.

Templates

Extension::TEMPLATE_STANDARD

Mode Template
default {{subject}} must have the {{extension}} extension
inverted {{subject}} must not have the {{extension}} extension

Template placeholders

Placeholder Description
extension
subject The validated input or the custom validator name (if specified).

Categorization

  • File system

Changelog

Version Description
3.0.0 Templates changed
1.0.0 Created

See Also