[gh0zt]

I like the idea but i don't like the actual implementation. For example: Number::tan takes an array of flags as an argument but only one flag is ever used to determine which kind of tangent method is eventually executed. For me as a user this does not only complicate the usage but it is also potentially (microoptimizationwise) slower because of the necessary condition check.

So instead of

  $number = new Number(4.2);
  $number->tan(array(Number::TRIG_ARC))

why not just implementing it as a separate method?

  $number->atan();

[niteshade]

Well, PHP has four 'tan' functions, and in all fairness, I might just remove those functions altogether and leave the basic ones. I do agree that its longer to type now, but at the expense of remembering WTF atan() does.

[gh0zt]

Well, if you need the atan function you probably know what it should do and apart from that why does the Number:tan method take an array of arguments when only one is ever used? So at least it should be usable like tan(Number::Number::TRIG_ARC).