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respect-validation/docs/validators/PropertyOptional.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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PropertyOptional

  • PropertyOptional(string $propertyName, Validator $validator)

Validates an object property against a given validator only if the property exists.

$object = new stdClass;
$object->name = 'The Respect Panda';
$object->email = 'therespectpanda@gmail.com';

v::propertyOptional('name', v::notBlank())->assert($object);
// Validation passes successfully

v::propertyOptional('email', v::email())->assert($object);
// Validation passes successfully

v::propertyOptional('age', v::intVal())->assert($object);
// Validation passes successfully

v::propertyOptional('website', v::url())->assert($object);
// Validation passes successfully

v::propertyOptional('name', v::lowercase())->assert($object);
// → `.name` must consist only of lowercase letters

The name of this validator is automatically set to the property name.

v::propertyOptional('email', v::endsWith('@example.com'))->assert($object);
// → `.email` must end with "@example.com"

Note

This validator will validate public, private, protected, uninitialised, and static properties. However, it will pass for anything that is not an object because it will always pass when it doesn't find a property in the input. If you want to ensure the input is an object, use ObjectType with it.

v::propertyOptional('name', v::notBlank())->assert('Not an object');
// Validation passes successfully

v::objectType()->propertyOptional('name', v::notBlank())->assert('Not an object');
// → "Not an object" must be an object
  • To only validate if a property exists, use PropertyExists instead.
  • To validate a property against a given validator requiring the property to exist, use Property instead.

Templates

Template placeholders

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

Categorization

  • Nesting
  • Objects
  • Structures

Changelog

Version Description
3.0.0 Created from Property

See Also