<?php //Set the default time zone date_default_timezone_set("Europe/London"); echo "*** Testing basic DateTime inheritance() ***\n"; class DateTimeExt extends DateTime { public static $format = "F j, Y, g:i:s a"; public function __toString() { return parent::format(self::$format); } } echo "\n-- Create an instance of DateTimeExt --\n"; $d = new DateTimeExt("1967-05-01 22:30:41"); echo "\n-- Invoke __toString --\n"; echo $d . "\n"; echo "\n -- modify date and time --\n"; $d->setDate(1963, 7, 2); $d->setTime(10, 45, 30); echo "\n-- Invoke __toString again --\n"; echo $d . "\n"; ?> ===DONE===