how to add current date to add 3 month date in php code example

Example 1: add 6 months to date in php

$effectiveDate = date('Y-m-d', strtotime("+3 months", strtotime($effectiveDate)));

Example 2: php date today plus 1 month

$future_timestamp = strtotime("+1 month");
$data = date('Y-m-d', $future_timestamp);