/**
* Initialize class if it was not previously initialized
*
* @return void
*/
protected static function initialize()
{
// Generally we want to base our intervals on a single time stamp
// per execution. If you have a script that requires a new time stamp
// for intervals simply remove if wrapper around this code
if (!self::$date) {
self::$date = new DateTime();
}
if (!self::$format) {
self::$format = 'Y-m-d H:i:s';
}
}
