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Chance Garcia's Blog:
Visibility and inheritance
Aug 12, 2009 @ 09:40:20

In this recent post to his blog Chance Garcia looks at visibility and inheritance in PHP applications. Specifically, it references a question that came up on IRC about the "default" visibility for methods and the open/closed principle.

Out of the whole discussion, here is the points I got (aka understood) out of it. Please correct me in the comments if I'm off base in any way.

There's two points he makes in the remainder of the post:

  • Methods should only be public when necessary.
  • Private methods allow you to preserve the class' core functionality.

There's also a bit of code included to illustrate some of his points.

tagged: visibility inheritance openclosedprinciple