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PHP | cal_days_in_month() Function

PHP cal_days_in_month() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP cal_days_in_month() Function.

The built-in cal_days_in_month() function in PHP returns back the number of days in the month of year for the specified calendar.


Following below is the syntax to use this function -

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

Parameter Details

Sr.NoParameter & Description


Calendar to use for calculation.



Month in the selected calendar



Year in the selected calendar

Return Value

This function returns the length in days of the selected month in the given calendar.


Try out the below example -

   $num = cal_days_in_month(CAL_GREGORIAN, 11, 2020);
   echo "There was $num days in Nov 2020";


When the above code is executed, it will produce the following result -

There was 30 days in Nov 2020

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP cal_from_jd() Function.

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