[Request] Get next empty / last used slot

[cviebrock]

I'm using numeric slots to keep a gallery of images in a sortable order. It would be nice if I could do something like:

$slot = Imager::getLastSlotUsed($model);
$slot++
$image = Imager::saveFromFile($file, $model, ['slot'=>$slot]);

It might be tricky if you use a combination of strings (e.g. "main_image") and integers for slots, but I'm sure it's doable. 😄

[atrauzzi]

Oh - it's doable! What I think I'll do is make a few helper methods along the lines of:

Imager::getLastNumericSlot($model);
Imager::getNextNumericSlot($model);

Perhaps also an:

Imager::saveToNextNumericSlot(...);

Utility methods like these won't compromise the library as numeric slots are definitely intended as part of the package.