cal_days_in_month: Number of days in a given month

To get the number of days in a given month we have to use cal_days_in_month function. Syntax is here:

cal_days_in_month(type of calendar, month, year )

Here is an example

$days = cal_days_in_month(CAL_GREGORIAN, 4, 2013);

echo "Number of days in  April  2013 = $days";

The output is here

Number of days in April 2013 = 30

Number of days in present month

There is a better way to get the number of days in present month by using date formats. Here is the code

echo date('t');

The output is here

Number of days in next month

We can read the present month and present year by using date() function. Then we will 1 to present month to get next month and then get the number of days in that month.


$m= date('m');// Present Month

$y= date('Y'); // Preseent year

$no_of_days = date('t',mktime(0,0,0,$m+1,1,$y)); // This is to calculate number of days in next month

echo " Number of days in $m month :$no_of_days";

The output is here Number of days in 09 month :31You can read more on date format here

Number of days in previous month

From the present month we can subtract 1 to get previous month

$no_of_days = date('t',mktime(0,0,0,$m-1,1,$y)); // to calculate number of days in previous month

Number of days in any given Month

Number of days in present month

Number of days in next month

Number of days in previous month