mirror of https://github.com/Respect/Validation.git synced 2026-03-15 14:55:44 +01:00

Alexandre Gomes Gaigalas bd48bdcda4 Lint Changelog format in validator docs

Introduces a Markdown linter for checking the Changelog format.

"See Also" was transformed into a section to make it easier to
handle it with the `Content` class. The "Related" linter was
simplified to reflect that change too.

An additional "alignment" parameter was added to markdown table
generators, allowing the padding and headers to be explicitly
marked with a specific left (-1), middle (0) or right(1)
alignment.

Existing files were fixed using the `fix` option after the
changes.

2026-01-26 19:11:00 +00:00

2.2 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()->assert('');
// Validation passes successfully

v::undef()->assert(null);
// Validation passes successfully

Other values similar to undefined values are considered defined:

v::undef()->assert([]);
// → `[]` must be undefined

v::undef()->assert(' ');
// → " " must be undefined

v::undef()->assert(0);
// → 0 must be undefined

v::undef()->assert('0');
// → "0" must be undefined

v::undef()->assert('0.0');
// → "0.0" must be undefined

v::undef()->assert(false);
// → `false` must be undefined

v::undef()->assert(['']);
// → `[""]` must be undefined

v::undef()->assert([' ']);
// → `[" "]` must be undefined

v::undef()->assert([0]);
// → `[0]` must be undefined

v::undef()->assert(['0']);
// → `["0"]` must be undefined

v::undef()->assert([false]);
// → `[false]` must be undefined

v::undef()->assert([[''], [0]]);
// → `[[""], [0]]` must be undefined

v::undef()->assert(new stdClass());
// → `stdClass {}` must be undefined

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`

2.2 KiB Raw Blame History