custom datetime, add 30 days to current date

Question

I want to add 30 days to current date time.

for example :

$today = date("Y-m-d H:i:s");

I want to generate new date time , I want to add 30 days to $today date time.

How I do that?

UPDATE:

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Answer 1

$thirty_days_ahead =  date('Y-m-d H:i:s', strtotime("+30 days") )

Answer 2

try this

$today = date('Y-m-d H:i:s',strtotime("+30 days"));

Answer 3

strtotime("+30 days")

should be the most simple way to do it.