You forgot to put quotes around the format string in strftime:

$time2 = strftime("%b %d, %y %T", $m_raw, $d0_raw, $y_raw, $hh_raw, $m
+m_raw, $ss_raw);
[download]

It works for me with the quotes added:

the date_raw is: 4/5/13 
the m_raw is: 04 
the d_raw is: 05 
the y_raw is: 2013 

the time_raw is: 16:09 
the hh_raw is: 16 
the mm_raw is: 09 

the loaded datetime variable is: 1365192540 
the formatted date time is: Jan 07, 01 21:05:04
[download]