Google Insights for Search is an interesting tool, it allows you to take a look at what people are serching for in different parts of the world and how is the volume of search evolving for a keyword in a specific part of the world or worldwide.
I played a bit with Google Insights and after a while i tought i check how PHP search volume is evolving, after all i work with PHP and i wanted to see what is graph for the popularity of this language. I must say i was shocked. The interest over time from 2004 to 2008 is declining, rapidly i could say. But don’t take my word for it, check in Google Insights, or here is the picture (click on it for better quality):
I don’t understand this decline as interest for many PHP applications are increasing sharply in this period, you could check Google Insights for WordPress , Joomla or other PHP based applications.
The only thing i could think about is the proliferation of these already built web apps, that are downloaded and installed, in many cases the users get an already functional application so they don’t have to bother do understand or learn about PHP. Back in the times when you needed a CMS or a website you had to build it yourself using PHP or at least you needed to have some PHP knowledge to install it. Now with the advanced click click next next installers users don’t need to know anything about PHP.
What is your opinion on this ?