RE: [PHP-DEV] [RFC] Combined Comparison Operator

>> >> Why not using $a - $b instead of $a >> <=> $b? >> >> >> Simon J Welsh <simon@simon.geek.nz> wrote: >>> The only real case I see for this is to save some boilerplate when >>> dealing with arrays. Strings have strcmp(), numbers have subtraction >>> And when you’re sorting objects, you probably want to be doing >>> the comparison on some string/numeric property. >>> >> >> Agreed! It would make more sense to write a comparison function for arrays/objects. >> >> >> Best regards >> Christian >> > > This operator DOES work on arrays/objects. The fact it also works on > scalar values is a bonus if that's how you want to look at it :P > > - Davey > That's why I said, it would make more sense to add a new function for comparing arrays and objects. Why adding a new comparison operator if we could achieve the same with one or two additional functions? And I am not sure, if this is not already possible nowadays. For arrays you could do: array_sum($array1) - array_sum($array2) And for objects you can define a "sum" method on your objects or a trait e.g. trait SummableTrait { public function sum() { $sum = 0; foreach (get_object_vars($this) as $value) { $sum += $value; } return $sum; } } You only have to use this trait in your classes and then you can do: $object1->sum() - $object2->sum() Et voilà :-) Christian