Getting time difference

Anyone know the function to compare two TIMESTAMPS (of 14 digits each) which will return the difference in seconds?

since timestamps are seconds. simply...


echo (timestamp1 - timestamp2);

Not 14 digit MySQL timestamps... which is to what I am refering to.

They come in the following format:

YYYYMMDDHHMMSS

eg:

20040603164500

This is 3 June 2004, 4:45:00pm

here's a date-time class that may help you

http://sourceforge.net/projects/phpdatetime/