- time: documentation ( source)
- print_r: documentation ( source)
- date: documentation ( source)
- gmdate: documentation ( source)
<?php
echo ("Expires: ".gmdate("D, d M Y H:i:s", time() + 3600)." GMT");
echo "\n";
$d1 = date("l, d-M-Y H:i:s T");
print_r( $d1 + 10*24*60*60);