Re: RFC: SPL Comparator interface

Hello Jeremy, Wednesday, October 8, 2008, 12:50:23 AM, you wrote: > Something that would be extremely useful is a comparator interface in > SPL, which could be used to easily implement sorting for objects. > Example: > class Foo implements Comparator > { > // is numeric for this example > public $bar; > //implements compare method from Comparator interface > public function compare($that) > { > //simple example; will return < 1 if this is less > //than that; zero if they're equal; > 1 if this is > //greater than that > return $this->bar - $that->bar; > } > } > Then, if I had an array of Foo objects, I could just call some kind of > spl_sort function on the array which would use my comparator to sort them. > I realize this can be kludged with usort(), but I think there should be > a better, OOP-ier way to do it. And for that exact reason we are adding closures in PHP 5.3. Best regards, Marcus