$CSV = fopen("input.csv", "r");

if($CSV !== FALSE)

{
    while(! feof($CSV))
        {
        $data = fgetcsv($CSV, 1000, ";");
        $dlc = preg_match_all("/DLC-[A-Z0-9]+/s", $data[20], $output_array);
        print_r(array_values($output_array));
        }
}

fclose($CSV);