Get Wordpress categories of the post and output each category with no link the attached followed by a comma

Output each-category-followed-by-a-comma

/**
 * Get categories of the post
 * Remove the links
 * Output each category followed by a comma
 * Comma is not added on the last item
 * @param $arr e.g. get_the_category()
 */
function get_cat_profile($arr)
{
    $counter = 0;
    if (count($arr) != 0) {
        foreach ($arr as $category) {
            ++$counter;
            echo count($arr) == $counter ? $category->cat_name . '' : $category->cat_name . ', ';
        }
    }
}