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
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