date_sub

Definition and usage

date_sub() function subtracts the day, month, year, hour, minute, and second from the specified date.

Example

Subtract 4 days from September 29, 2016:

 <?php
$date = date_create ( "2016-09-29" ) ;
date_sub ( $date , date_interval_create_from_date_string ( "4 days" ) ) ;
echo date_format ( $date , "Ymd" ) ;
?>

Try it yourself

grammar

 date_sub ( object , interval ) ;