Simon Willison’s Weblog

OmniTI_OpenID. OmniTI’s PHP OpenID 1.1 consumer library. Much less full featured than the JanRain library, but it’s good to have more than one. 1:15 am

Primality regex. A regular expression that can identify prime numbers. Unsurprisingly, this one comes from the Perl community. 1:17 am