Adding years to a date resets to 1970-01-01

Question

$somedate = \"1980-02-15\";
$otherdate = strtotime(\'+1 year\', strtotime($somedate));
echo date(\'Y-m-d\', $otherdate);

outputs

19         


        

Answer 1

For unix timestamp, the maximum representable time is 2038-01-19. At 03:14:07 UTC.

So you can't represent/operate time that over it by using timestamp.