Date subtraction

[alirezaok]

hi

i want subtraction 50 days from a date variable
example

$date=2003/5/25;
result = $date - 50;

but this code didnot work

anyone can write code fot does it?

[lazzerous]

// time in seconds since epoch
$time = time();

// time converted to number of days
$time_in_days = ($time / 60 / 60 / 24);

// subtract 50 days from this
$subtracted_days = $time_in_days - 50;

//re-convert to seconds
$new_time = ($subtracted_days * 24 * 60 * 60);

//display date from modified data
echo date("Y/m/d", $new_time);