Can Drupal run on the iPhone?

Well, not yet, but perhaps soon.

A while back Karoly Negyesi (chx) posted on what is the smallest platform that can run Drupal. He ended up with the Nokia N800 internet tablet as a candidate for that, using maemo (a Linux distro for that platform, which includes PHP and lighttpd). SQLite will be the database.

It seems there is a contender for that now: Apple's iPhone. According to Gizmodo, Apache and Python are now available on the iPhone. See also the Slashdot discussion.

How far can PHP and SQLite be?

That would a cool, but perhaps of limited practical use aside from demos on the run ...