I have an ipod touch.
And I jailbroke it. (Worked like it says on the box, incidentally)
And I have Apache + PHP working.
And I have WordPress 2.2.2 for Sqllite on it.
But alas, writes to the database aren’t happening.
(I installed it on a Real Computer and put the .db file it created on to my iPod; and WordPress is able to read data from it A-OK. It just isn’t writing to it. The permissions on the .db file are 777; same for the folder its in. I’ve also tried renaming it to .sqlitedb which matches some of the other sqlite databases that the iPod uses, but that made no difference either.)