- date_format: documentation ( source)
- date_modify: documentation ( source)
<?php
$issue_date = new DateTime();
$expiration_date = new DateTime();
date_modify($expiration_date, '+60 day');
$issue_date_text = date_format($issue_date, 'Y-m-d');
$expiration_date_text = date_format($expiration_date, 'Y-m-d');
echo($issue_date_text . " " . $expiration_date_text);