<?php

// your code goes here


$addr1 = "5285 KEYES DR  KALAMAZOO MI 49004 2613";
$addr2 = "PO BOX 35  COLFAX LA 71417 35";
$addr3 = "64938 MAGNOLIA LN APT B PINEVILLE LA 71360-9781";

function extract_zipcode($address) {
    $zipcode = preg_match("/\b[A-Z]{2}\s+\d{5}(-\d{4})?\b/", $address, $matches);
    return $matches[0];
}

    echo extract_zipcode($addr1) . ' ';
    echo extract_zipcode($addr2) . ' ';
    echo extract_zipcode($addr3) . ' ';