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I've used big IDEs in the past: all the Drupal gurus/ninjas/whatever use Eclipse, Netbeans or something way over the top. My big project programming days are well and truly over - kicked the arse out of it over the years in BASIC, Pascal, FORTRAN, CORAL, ADA, Java and C++. When I started using Drupal to build websites, my aim was to avoid touching its underlying language, PHP.  Managed that for 2 years, but recently have had to geek out to do a few cheeky things, either in the theming layer or some simple modules.

I spent ages trawling the internet trying to find easy ways to change the little links that Drupal attaches to each node ('Add new comment') and either remove them, change them to icons or shuffle the order. Options available include:

In the event of an HTTP 404 error ("Page not found") this PHP snippet will render a site search form, but will take keywords from the user's erroneous URL and pre-populate. 

Create a new node (node/add/page), and ensure you can enter PHP code in your page body (check input filters).

Insert the following code into the body of your new page: