PHP array_search for multi dimensional array and return key

Question

I\'m trying to search for a value in a multi dimensional array (below is only a part of the big array) and get the key for that value but I can\'t manage it by myself. Here is w

Answer 1

Try this function for recursive searching:

function array_search_recursive($needle, array $haystack)
    {
        foreach ($haystack as $key => $value) {
            $current_key = $key;

            if ($needle === $value or (is_array($value) && array_search_recursive($needle, $value) !== false)) {
                return $current_key;
            }
        }
        return false;
    }

$key = array_search_recursive("FR*S30*E37*2*1", $data);