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<!DOCTYPE html> <html> <body> <?php $date=date_create("2013-05-01"); date_time_set($date,13,24); echo date_format($date,"Y-m-d H:i:s") . "<br>"; date_time_set($date,12,20,55); echo date_format($date,"Y-m-d H:i:s"); ?> </body> </html>