PHP Laravel 5.3

Question

I have object a problem looping data collection,

seem's like this below

collect($extracts->each(function($object, $okey){ print_r($okey); print_r($object); });

the result is like this:

$object( [items:protected] => Array

    (
        [PAL175MW1_Protelindo Besusu ManggisMW1] => 29273552197058179
        [PAL175MW1_Protelindo Besusu ManggisMW2] => 29273552197058180
        [PAL175MW1_Protelindo Besusu ManggisMW3] => 29273552197058181
        [PAL175MX1_Protelindo Besusu ManggisMX1] => 29273552197058182
   ) )

how can I get value like this->(29273552197058179,29273552197058180) from the $object