On his blog, Jonathan Street has posted some "random thoughts" on generating random (or not so random) strings in PHP.

Humans are astoundingly bad at being random and I just slapped the keyboard a few times until I felt I had the required 16 characters.

Writing some code to produce a fairly random string is incredibly easy. I've easily done it a dozen times or more.

Though only because it is easier to re-write it than to...