parsing URLs
December 19th, 2007There are lots of things that you’d want computers to simplify for you - but the obvious methods for simplification don’t actually work. For example, finding out if a user entered email is actually valid. The description and code involved (see here and the monstrous chunk of code here) belies the apparent simplicity of the task.
So it was for my own little task. What I wanted to do was write a general purpose method (in PHP, actually - but the language itself is unimportant) to infer the blog address, given a permalink. So, given any post URL - I wanted to find the address of the blog itself. You’d think that this was a relatively straightforward task. But, if the preamble didn’t alert you already, it wasn’t quite as simple as I first envisaged.