[guelo]

The TIOBE index shows PHP's popularity began declining two years ago.

http://www.tiobe.com/index.php/paperinfo/tpci/PHP.html

[kdizza]

Apparently Ruby peaked 3 years ago: http://www.tiobe.com/index.php/paperinfo/tpci/Ruby.html

And I don't know what to make of Python: http://www.tiobe.com/index.php/paperinfo/tpci/Python.html