respect-validation/docs/validators/Falsy.md
Henrique Moody 7c681fec66
Fix SPDX headers in all files
I ran the `bin/console spdx --fix` with different strategies for
different files. For most of the core classes, since they've been
drastically rebuilt, I've run it with the `git-blame` strategy, for for
the `src/Validators`, in which the API changed completely but the logic
remains the same, I use the `git-log` strategy.
2026-02-03 15:23:23 +01:00

1.7 KiB

Falsy

  • Falsy()

Validates whether the given input is considered empty or falsy, similar to PHP's empty() function.

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

v::falsy()->assert('');
// Validation passes successfully

Null values are empty:

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

Numbers:

v::falsy()->assert(0);
// Validation passes successfully

Empty arrays:

v::falsy()->assert([]);
// Validation passes successfully

Templates

Falsy::TEMPLATE_STANDARD

Mode Template
default {{subject}} must be falsy
inverted {{subject}} must not be falsy

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 Falsy and changed the behavior
0.3.9 Created as NotEmpty

See Also