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respect-validation/docs/comparable-values.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

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Comparable values

For certain types you can't make comparisons out of the box in PHP but Validation brings support to a few of them.

You can make comparison with the following data types:

  • Countable: any object that implements Countable interface
  • DateTimeInterface
  • Numeric types
  • Single character string
  • Primitive types in general: normal operation comparison made by PHP
  • Time string: date and time format that can be parsed by PHP

Below you can see some examples:

v::greaterThanOrEqual(100)->isValid($collection); // true if it has at least 100 items

v::dateTime()
    ->between(new DateTime('yesterday'), new DateTime('tomorrow'))
    ->isValid(new DateTime('now')); // true

v::numericVal()->lessThanOrEqual(10)->isValid(5); // true

v::stringVal()->between('a', 'f')->isValid('d'); // true

v::dateTime()->between('yesterday', 'tomorrow')->isValid('now'); // true