How to add months to timestamp

Question

I have a timestamp $timestamp. How do I add 6 months to that timestamp using strtotime?

I was thinking of doing

$date = date('Y-m-d H:i:s', $timestamp);
$sixmonths_fromnow = strtotime('+6 months', $date);

but can I use strtotime directly on the timestamp? do I have to use the date() function first?

Answer 1

You need to use the timestamp:

$sixmonths_fromnow = strtotime('+6 months', $timestamp);
echo date('Y-m-d H:i:s', $sixmonths_fromnow);