respect-validation/docs/rules/DateTime.md

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# DateTime
- `DateTime()`
- `DateTime(string $format)`
Validates whether an input is a date/time or not. The `$format` argument should
be in accordance to PHP's [date()](http://php.net/date) function.
```php
v::dateTime()->validate('2009-01-01'); // true
```
Also accepts strtotime values:
```php
v::dateTime()->validate('now'); // true
```
And `DateTimeInterface` instances:
```php
v::dateTime()->validate(new DateTime()); // true
v::dateTime()->validate(new DateTimeImmutable()); // true
```
You can pass a format when validating strings:
```php
v::dateTime('Y-m-d')->validate('01-01-2009'); // false
```
Format has no effect when validating DateTime instances.
Message template for this validator includes `{{format}}`.
## Categorization
- Date and Time
## Changelog
Version | Description
--------|-------------
2.0.0 | Created
***
See also:
- [Between](Between.md)
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- [Date](Date.md)
- [LeapDate](LeapDate.md)
- [LeapYear](LeapYear.md)
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- [MinAge](MinAge.md)
- [Time](Time.md)