php remove duplicates from multidimensional array by value

Question

I would like to remove duplicates by value as you can see from the list_title. I know there are several questions and answers to this but their solution doesn\'

Answer 1

Try this

 $value)
      {
        if ( is_array($value) )
        {
          $result[$key] = super_unique($value);
        }
      }

      return $result;
    }
    ?>