form processing problem

[Dormilich]

this is a follow-up thread to this one.
http://bytes.com/topic/html-css/answ...tted-sometimes

I figured out that the mail sending class triggers the described error. unfortunately, no error message is given by the system.

<?php
class Mail_Tabelle extends Mail_DB
{
    protected $description = false;
    const TBL_HEAD = '
    <thead>
        <tr>
            <th id="spalte1">Datum</th>
            <th id="spalte2">Nachricht</th>
        </tr>
    </thead>';
 
    function __construct()
    {
        parent::load();
 
        if (isset($_POST['senden']))
        {
            $this->sendMail();
        }
        if (isset($_GET['desc']) and preg_match('#^\d+$#', $_GET['desc']) == 1)
        {
            $this->description = (int) $_GET['desc'];
        }
    }
 
    public function printTable()
    {
        $anzahl = count(parent::$DB_mails);
        if ($anzahl == 0) return false;
        echo '
<table id="blog">', self::TBL_HEAD, '
    <tbody>';
        for ($i=0; $i<$anzahl; ++$i)
        {
            $desc = ($this->description === $i) ? true : $i;
            parent::$DB_mails[$i]->printTableRow($desc); 
        }
        echo '
    </tbody>
</table>
';
    }
 
    protected function sendMail()
    {
        $text = $_POST["NLG"];
        $betreff = $_POST["betreff"];
        if (!$text or !$betreff) return false;
        $adr = $this->prepareMail();
        $msg = "[...]";
        $RS = new Mail_Verteiler($msg, $betreff); // problem is HERE
        $RS->setList($adr);
        $RS->sendMails();
        $this->saveMail();
    }
}
?>

I suspect something with the loading isn't going right, because it doesn't matter if I uncomment the parent constructor (line 11) or not.

can anyone give me an idea how to get some clues where the problem's cause is?

<?php
require_once LIB_DIR . "Swift/Plugin/Decorator.php";
 
class Mail_Verteiler extends KBL_Mail
{
    protected $to = NULL;
    protected $replace = array();
 
    function __construct($msg, $subj)
    {
        parent::__construct($msg, $subj);
    }
 
    public function setList($empfanger)
    {
        if (!is_array($empfanger)) return false;
        if (!($this->to instanceof Swift_RecipientList))
        {
            $this->to = new Swift_RecipientList;
        }
        foreach ($empfanger as $person)
        {
            $Name = ($person['Name']) ? $person['Name'] : 'Leser';
            $this->to->addTo($person['Email']);
            $this->replace[] = array('{name}' => $Name, '{UID}' => $person['UID']);
        }
        return true;
    }
 
    public function sendMails($from = '[e-mail]')
    {
        if (!($this->to instanceof Swift_RecipientList)) 
        {
            $this->sent = false;
            return false;
        }
        $this->mail->attachPlugin(new Swift_Plugin_Decorator($this->replace), "decorator");
        return $this->sendTo($this->to, $from);
    }
}
?>

<?php
require_once LIB_DIR . "Swift.php";
require_once LIB_DIR . "Swift/Connection/SMTP.php";
require_once CONF_DIR . "conf.mail.php";
 
/**
 * a little wrapper around Swift_Mail for sending error reports.
 * only basic email sending is intended, so for HTML form results
 * use Swift directly.
 */
class KBL_Mail
{
    /**
     * @var (object) $mail      Swift Mail (root) class
     * @var (bool) $sent        success of sending the email
     * @var (string) $subject   email subject
     * @var (string) $message   email message
     */
    protected $mail = NULL;
    protected $sent = false;
    public    $subject;
    public    $message;
 
    /**
     * establish the connection to the SMTP server
     * load subject & message
     */
    function __construct($message = '', $subject = 'Fehlerbericht')
    {
        # connect to the mail server
        $smtp = new Swift_Connection_SMTP(KBL_MAIL_SMTP_STD, 587, Swift_Connection_SMTP::ENC_OFF);
        $smtp->setUsername(KBL_MAIL_USER);
        $smtp->setPassword(KBL_MAIL_PASS);
 
        # create swiftmailer class
        $this->mail = new Swift($smtp);
        $this->subject = $subject;
        $this->message = $message;
    }
 
    function __destruct()
    {
        $this->mail->disconnect();
    }
 
    /**
     * send email
     *
     * @param (string) $to       recipient (To:)
     * @param (string) $from     sender (From:)
     * @return (void)
     */
    public function sendTo($to = KBL_MAILTO_ADMIN, $from = '[e-mail]')
    {
        $swift_msg = new Swift_Message($this->subject, $this->message);
        $swift_msg->headers->setLanguage("de");
        $this->sent = $this->mail->send($swift_msg, $to, $from);
        return $this->sent;
    }
}
?>