How to find the highest value in a multidimensional array?

Question

I have following array:

$ar3 = array(123, array(12, 665, array(77, 255, 98, 56), 8), 1155, 676);

I need to compare all of its elements with

Answer 1

You can try using recursive function

     $value) {
           if (is_array($value)) {
               $ar3[$key] = highestValue($value);
           }
       }

         return max($ar3);
    }

    echo highestValue($ar3); //1155