mirror of https://github.com/Respect/Validation.git synced 2026-03-16 07:15:45 +01:00

Henrique Moody 81310cc4d9

Rename namespace Rules to Validators

Since that namespace contains our “validators”, naming it as such makes
much more sense.

2026-01-05 17:36:35 +01:00

1.8 KiB

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Undef

Undef()

Validates if the given input is undefined. By undefined we consider null or an empty string ('').

We recommend you to check Comparing empty values for more details.

v::undef()->isValid(''); // true
v::undef()->isValid(null); // true

Other values similar to undefined values are considered defined:

v::undef()->isValid([]); // false
v::undef()->isValid(' '); // false
v::undef()->isValid(0); // false
v::undef()->isValid('0'); // false
v::undef()->isValid('0.0'); // false
v::undef()->isValid(false); // false
v::undef()->isValid(['']); // false
v::undef()->isValid([' ']); // false
v::undef()->isValid([0]); // false
v::undef()->isValid(['0']); // false
v::undef()->isValid([false]); // false
v::undef()->isValid([[''], [0]]); // false
v::undef()->isValid(new stdClass()); // false

Templates

`Undef::TEMPLATE_STANDARD`

Mode	Template
`default`	{{subject}} must be undefined
`inverted`	{{subject}} must be defined

Template placeholders

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

Categorization

Miscellaneous

Changelog

Version	Description
3.0.0	Renamed to `Undef` and changed the behavior
1.0.0	Created as `NotOptional`

1.8 KiB Raw Blame History