I'm really stuck with adding X minutes to a datetime, after doing lots of google'ing and PHP manual reading, I don't seem to be getting anywhere.

The date time format I have is:

2011-11-17 05:05: year-month-day hour:minute

Minutes to add will just be a number between 0 and 59

I would like the output to be the same as the input format with the minutes added.

Could someone give me a working code example, as my attempts don't seem to be getting me anywhere?