If you've been running your blog or site on WordPress for any period of time, you may well have come across a message about a deprecated function or argument in your PHP log file or across the top of a page on your site. The message might look something like this ...

Notice:  get_bloginfo was called with an argument that is **deprecated** since version 2.2! The siteurl option is deprecated for the family of bloginfo() functions. Use the url option instead. in /var/web/htdocs/site/wp-includes/functions.php on line 2712

... this often appears after you've installed or upgraded a new theme or plugin. This message is helpful but really only 50% useful. The PHP file and line number that's being reported isn't where the deprecated function or argument is being used; it's where it's being reported from. Often, even after you've searched through the source code of the new plugin or theme you're still none the wiser about where the troublesome piece of PHP that WordPress is telling you about actually lives. WordPress is a complicated mix of PHP, JavaScript and CSS; there's a lot more going on under the hood than most of us are remotely aware of.

Although I fly a lot these days, I don't fly on internal routes in the US that much and so flying Virgin America, which has onboard wifi, is still something that brings out the childish geek in me. In homage to a certain Mr. Aaron Cope, once again I am in the sky as I write this and starting to think that maybe I will only write blog posts from airplanes from now on.

While sitting in a hotel room about a week or so back, I realised that while vicchi.org has been the home of my blog for years and the current incarnation may have 267 pieces of bloggage tucked away in the bowels of WordPress (that's 268 with this post), the theme has been pretty much static since sometime in 2007. The same goes for my other web presence over at garygale.com.

But back to this blog for a moment. Like a lot of people I started out with a stock WordPress install and theme. Then I went through the discovery of the WordPress theme repository, installing and uninstalling too many plugins, before finally becoming confident enough to start hacking the PHP and CSS of an existing theme into something vaguely approaching what I wanted. And thereby hangs the problem. My theme, which started out as Chandra Maharzan's rather wonderful Cleanr, suffered from the problem that each time the theme was updated I needed to go through the changes and manually apply them to my hacked version. Scalable and fun this is not.