Show Twitter followers count snippets don’t work

No matter what I try I can’t seem to get the code snippets to work that will display the number of followers of Twitter.
I tried various ones as the Plugin I’m using is not showing the Twitter number at all, so I need to look for alternatives.

When I tried this snippet, for example, I got the following error message:
http://pastebin.com/iif9g35a

Anybody any idea what’s going wrong here?
I think it’s strange that the “Suscribers to text” plugin doesn’t display the number of followres to begin with – otherwise I wouldn’t have to look for alternatives.

Ouch, that snippet is ancient (I am kinda its author, more precisely adapted to twitter from other snippet). I would strongly consider using some newer solution.

I had later made newer and written from scratch version, try it http://www.rarst.net/script/twitter-counts-wordpress/