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# PHP Function cal_days_in_month()

## Syntax

cal_days_in_month ( $calendar, $month, $year );

## Definition and Usage

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

## Paramters

Parameter | Description
--- | ---
calendar | Required. Calendar to use for calculation.
month | Required. Month in the selected calendar
year | Required. Year in the selected calendar

## Return Value

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

## Example

Try out following example:

    <?php
    $num = cal_days_in_month(CAL_GREGORIAN, 8, 2003);
    echo "There was $num days in August 2003";
    ?>

This will produce following result:

    There was 31 days in August 2003

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