<?php

    $imapPath = '{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX';
    $username = 'example@gmail.com';
    $password = 'password.';

    $inbox = imap_open($imapPath, $username, $password) or die('Cannot connect to Gmail: ' . imap_last_error());

    $emails = imap_search($inbox, 'ALL');

    //$count=0;
    foreach ($emails as $mail) {
        $overview = imap_fetch_overview($inbox, $mail);
        $u_id     = $overview[0]->uid;
        if ($u_id == 343) {  //12 is message unigue id
            $headerInfo = imap_headerinfo($inbox, $mail);

            $structure = imap_fetchstructure($inbox, $mail);
            if (isset($structure->parts) && is_array($structure->parts) && isset($structure->parts[1])) {

                $part    = $structure->parts[1];
                $message = imap_fetchbody($inbox, $mail, '2');

                if ($part->encoding == 3) {
                    $message = imap_base64($message);
                    echo $message;
                    echo "<br><b>base64</b><br>";
                } else if ($part->encoding == 1) {
                    $message = imap_8bit($message);
                    echo $message;
                    echo "<br><b>imap_8bit</b><br>";
                } else {
                    $message = imap_qprint($message);
                    echo $message;
                    echo "<br><b>imap_qprint</b><br>";
                }

            }

        }
    }
    imap_expunge($inbox);
    imap_close($inbox);


    ?>