Immitate PHP 5.3 DateTime in PHP 5.2
The last line would have to be translated to
echo '<h3>' . $reqDate->format('U') . '</h3>';in order to work with PHP 5.2. Other that that, it looks fine.
Edit:You could subclass DateTime to provide a forwards compatible solution:
class MyDateTime extends DateTime { public function getTimestamp() { return method_exists('DateTime', 'getTimestamp') ? parent::getTimestamp() : $this->format('U'); }}
This is a pretty complete DateTime 5.2 extension. Look for my comment for setTimestamp to fix your time_zone issues though