cal_days_in_month

Return the number of days in a month for a given year and calendar

&reftitle.description; `int` `cal_days_in_month` `int` `calendar` `int` `month` `int` `year`

This function will return the number of days in the `month` of `year` for the specified `calendar`.

&reftitle.parameters;

`calendar`

- Calendar to use for calculation

`month`

- Month in the selected calendar

`year`

- Year in the selected calendar

&reftitle.returnvalues;

The length in days of the selected month in the given calendar

&reftitle.examples;

### `cal_days_in_month` example

    <?php
    $number = cal_days_in_month(CAL_GREGORIAN, 8, 2003); // 31
    echo "There were {$number} days in August 2003";
    ?>