how to calculate what is date after 10 days in php?

Question

Suppose the $start_date = 2017-12-13.

And i want to know what should be date after 10 days.

i tried this strtotime("$start_date +10 days") and the output is 1512946800

Answer 1

You got the timestamp as value, now you just need to format it back to date.

date("y-m-d HH:mi:ss", strtotime("$start_date +10 days"))
date("Y-m-d", strtotime("$end_date -10 days")); //for minus

That should take care of it.