source: companies/celepar/expressoMail1_2/inc/show_thumbs.php @ 763

<?php
        $username = $_SESSION['phpgw_info']['expressomail']['user']['userid'];
        $password = $_SESSION['phpgw_info']['expressomail']['user']['passwd'];
        $imap_server = $_SESSION['phpgw_info']['expressomail']['email_server']['imapServer'];
        $imap_port      = $_SESSION['phpgw_info']['expressomail']['email_server']['imapPort'];
        if ($_SESSION['phpgw_info']['expressomail']['email_server']['imapTLSEncryption'] == 'yes')
        {
                $imap_options = '/tls/novalidate-cert';
        }
        else
        {
                $imap_options = '/notls/novalidate-cert';
        }

        $file_type = $_GET['file_type'];
        $msg_num = $_GET['msg_num'];
        $msg_part = $_GET['msg_part'];
        $msg_folder = $_GET['msg_folder'];
        $msg_folder = mb_convert_encoding($msg_folder,"UTF7-IMAP", mb_detect_encoding($msg_folder, "UTF-8, ISO-8859-1", true));
        $mb = imap_open("{".$imap_server.":".$imap_port.$imap_options."}".$msg_folder, $username, $password);

        $image_mail = imap_fetchbody($mb, $msg_num, $msg_part, FT_UID);
        $image = imap_base64($image_mail);
        $image = imagecreatefromstring ($image);
        
        header("Content-Type: ".$file_type);
        header("Content-Disposition: inline");
 
        $pic = $image;
    if ($pic) {
        $width = imagesx($pic);
        $height = imagesy($pic);
        $twidth = 160; # width of the thumb 160 pixel
        $theight = $twidth * $height / $width; # calculate height
        $thumb = imagecreatetruecolor ($twidth, $theight);
                imagecopyresized($thumb, $pic, 0, 0, 0, 0,$twidth, $theight, $width, $height); # resize image into thumb
                imagejpeg($thumb,"",75); # Thumbnail as JPEG
    }
?>