add month to current php code example

Example 1: +1 month php

$time = strtotime("2010.12.11");
$final = date("Y-m-d", strtotime("+1 month", $time));

Example 2: php date today plus 1 month

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