A new article over on Stefan Mischook's blog today talks about why PHP should be the language of choice as told from a business mindset.

I have written this article to speak to business owners and other non-nerd types. [...] I concentrate on the business arguments and only touch on the technological issues underlying them … when it makes sense to mention the nerd stuff.

He talks about answers to the "business questions" (like "Is the language reliable?"), about how PHP was made for the web not adapted to it and a quick story of his own to back up his points (started a project with Java and moved to PHP for thousands of dollars in savings).