I have an array called `$brand_terms`. I'm accessing two objects in this array. In this case 'name' and 'slug'. I'm then trying to set values of these objects in an associative array called `$values`. The code is below:

```
$brand_terms = get_terms("pa_brand");
$values = array(
    foreach ($brand_terms as $brand_term){
        $brand_term->name => $brand_$term->slug, 
    }
);

```

The problem I have is with the separator `,`. So the comma at the end of `$brand_term->name => $brand_$term->slug,`. If the loop is at the last value in the array, the comma is not needed and the the code is broken. Is there a nice way to remove this comma from the last iteration of the foreach loop?

Thanks