You want the set of time and date parts that corresponds to an epoch timestamp.

Pass an epoch timestamp to getdate( ):

The time parts returned by getdate( ) are detailed in Table 3-1. These time parts are in local time. If you want time parts in another time zone corresponding to a particular epoch timestamp, see Recipe 3.12.

Recipe 3.3 for how to convert time and date parts back to epoch timestamps; Recipe 3.12 for how to deal with time zones; documentation on getdate( ) at http://www.php.net/getdate.