checkdate

Validate a Gregorian date

&reftitle.description; `bool` `checkdate` `int` `month` `int` `day` `int` `year`

Checks the validity of the date formed by the arguments. A date is considered valid if each parameter is properly defined.

&reftitle.parameters;

`month`

- The month is between 1 and 12 inclusive.

`day`

- The day is within the allowed number of days for the given `month`. Leap `year`s are taken into consideration.

`year`

- The year is between 1 and 32767 inclusive.

&reftitle.returnvalues;

Returns &true; if the date given is valid; otherwise returns &false;.

&reftitle.examples;

### `checkdate` example

    <?php
    var_dump(checkdate(12, 31, 2000));
    var_dump(checkdate(2, 29, 2001));
    ?>

&example.outputs;

    bool(true)
    bool(false)

&reftitle.seealso;

- `mktime`
- `strtotime`