how to get from hotmail the "X-message-delivrey" and "IP" using imap and php?

Question

i want to extract the x-message-delivery and ip from outlook ,and i tried the normal library of IMAP ,but there's no specefic tag to search for it. i'm using php in laravel, and i want to fetch those informations and i already connect my imap to HOTMAIL .

 $regExp = '/^(((?=(?>.*?(::))(?!.+\3)))\3?|([\dA-F]{1,4}(\3|:(?!$)|$)|\2))(?4){5}((?4){2}|((2[0-4]|1\d|[1-9])?\d|25[0-5])(\.(?7)){3})\z/i';
            $header = explode("\n", imap_fetchheader($conn, 1));
            echo implode("\n",$header);
          preg_match_all($regExp,implode("\n",$header),$array );
         print_r($array);

this what i tried for ip bur it print empty array and this id the result

Array ( [0] => Array ( ) [1] => Array ( ) [2] => Array ( ) [3] => Array ( ) )