Get the number of days in a month for a specified year and calendar in PHP

Description

The following code shows how to get the number of days in a month for a specified year and calendar.

Example

/*from  w w w  .j av  a  2  s  .c  o  m*/
<?php
    $d=cal_days_in_month(CAL_GREGORIAN,10,2014);
    echo "There was $d days in October 2005";
?>

The code above generates the following result.