53 I don't mind being able to put variables directly into strings, even if I don't use it myself. There are more languages that allow you to do that.52 Looks like a good way to write unmaintainable code.
55 if you truly want to write unmaintainable code you should use the fact that php may not care about capitalization when setting constants. Thus you can effectively overwrite them in certain cases.54 I was referring to mixing all of them together. It's like using int[] a[]; to define a 2 dimensional array.