respect-validation/docs/rules/Optional.md

Optional

• Optional(Validatable $rule)

Validates if the given input is optional or not. By optional we consider null or an empty string ('').

v::optional(v::alpha())->validate(''); // true
v::optional(v::digit())->validate(null); // true

Changelog

Version	Description
1.0.0	Created

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See also:

• NoWhitespace
• NotBlank
• NotEmpty
• NotOptional
• NullType
• Nullable