1) $result=$c1.multiply($c2).divide($c1.add($c2));
2) $result=($c1 * $c2) / ($c1 + $c2);
They sure aren't to me. Moreover, they are not the same: operator overloading enable you to use infix notation, whereas functions use prefix, only.
Um, you're wrong. Infix is quite easy to do using (static or non-static) functions:
3) $result = Complex::divide(Complex::multiply($c1, $c2), Complex::add($c1, $c2));
Greg
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