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<?php date_default_timezone_set('America/Los_Angeles'); var_dump(strtotime('2013-11-03 01:00:00')); var_dump(strtotime('2013-11-03 02:00:00')); var_dump(strtotime('2013-11-03 03:00:00')); var_dump(strtotime('2013-11-03 03:00:00') - strtotime('2013-11-03 02:00:00')); var_dump(strtotime('2013-11-03 02:00:00') - strtotime('2013-11-03 01:00:00')); var_dump(date('Y-m-d H:i:s', strtotime('2013-11-03 00:00:00'))); var_dump(date('Y-m-d H:i:s', strtotime('2013-11-03 01:00:00'))); var_dump(date('Y-m-d H:i:s', strtotime('2013-11-03 02:00:00')));

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