Date Add - PHP

Date Add WE will learn how to add date time intervals to a date object. We must understanddate interval and date format before using add function to the date object.  Note:This will work only if your PHP version is 5.3 or higher.                           Let us try to add 5 days to current date. date_default_timezone_set ("Asia/Kolkata"); $date=new DateTime("now") ; echo $date->format('d-m-y'); echo "<br>"; $date=$date->add(new DateInterval('P5D')); echo $date->format('d-m-y '); The output is here 02-02-15 07-02-15 We will add 1 Year, 3 months , 5 days . We will only change the affected row in above code like this. $date=$date->add(new DateInterval('P1Y3M5D')); echo $date->format('m-d-y '); Let us add hour minute and seconds to this date object. date_default_timezone_set ("Asia/Kolkata"); $date=new DateTime("now") ; echo $date->format('d-m-y H:i:s'); echo "<br>"; $date=$date->add(new DateInterval('P1Y3M5DT4H5M12S')); echo $date->format('m-d-y H:i:s ')";