In the last two entries we have talked about the concept of layer abstraction: that is, that exceptions should not be allowed to pass out of one layer and into another. So, when an exception is raised in the database layer it should be caught in the controller. But how do we go about making [...]

On Monday, we talked about the basics of exceptions and how they are used in PHP (as well as in other object-oriented programming languages). As promised, today we are going to talk about extending the base exception class in PHP.

A great feature of PHP is the ability to throw and catch exceptions. This feature was introduced in PHP 5, and has been around for years in other languages like Python.

Last week, I did a talk at the Frederick Web meetup about tips and tricks for improving your object-oriented code. A lot of these tips were adapted from a fabulous presentation by Stefan Priebsch but the ideas are by no means original to him, and they’re exceptionally good ideas when you’re talking about object-oriented code. [...]

A little while ago, I wrote an article discussing why interfaces rock and the way that interfaces work. However, a couple of comments made me realize that I didn’t discuss one of the key elements about interfaces: why you would use them.