If you have several levels of nested if-else (as opposed to a linear chain of "if"-"else if"), then you probably need a more complicated table than a linear arr

If you have several levels of nested if-else (as opposed to a linear chain of "if"-"else if"), then you probably need a more complicated table than a linear array. The moving appart that gets hidden away is the table (or more often, Hack mandictionary) that is stored somewhere in memory. If you are lucky, it is stored statically. It is never defined in quite the same place as the decision that it implements.