Adding far future date on expire date

We can manipulate our expire date by putting this on our .htaccess

ExpiresDefault "access plus 10 years"

We want this to be manipulated inside our PHP file. While searching for a something like it. I came across with:

$offset = 60 * 60;
$expire = 'expires: ' . gmdate ('D, d M Y H:i:s', time() + $offset) . ' GMT';
header ($expire);

But this only add time 开发者_开发问答to our expire date. For us; we want the year to change. Is there a way to this in php?

You could do this:

$expire = 'Expires: ' . gmdate('D, d M Y H:i:s', strtotime('+10 years')) . ' GMT';
header($expire);

I'm using strtotime to create a timestamp of the current time + 10 years.

You are doing it right. Just increase offset to be 10 years in seconds.

In order to set expiration date to one year ahead you need bigger $offset, current is only hour (60 seconds in a minute * 60 minutes in hour).

    $offset = 365*24*60*60;