Forwarding emails with a PHP script

Question

We have a cron\'ed PHP script that checks an inbox every ten minutes. The purpose of this script is to handle \"STOP to quit\" functionality for our SMS notification service

Answer 1

I coded this method a long time ago to parse an email message into their appropriate parts using IMAP:

function Message_Parse($id)
{
    if (is_resource($this->connection))
    {
        $result = array
        (
            'text' => null,
            'html' => null,
            'attachments' => array(),
        );

        $structure = imap_fetchstructure($this->connection, $id, FT_UID);

        if (array_key_exists('parts', $structure))
        {
            foreach ($structure->parts as $key => $part)
            {
                if (($part->type >= 2) || (($part->ifdisposition == 1) && ($part->disposition == 'ATTACHMENT')))
                {
                    $filename = null;

                    if ($part->ifparameters == 1)
                    {
                        $total_parameters = count($part->parameters);

                        for ($i = 0; $i < $total_parameters; $i++)
                        {
                            if (($part->parameters[$i]->attribute == 'NAME') || ($part->parameters[$i]->attribute == 'FILENAME'))
                            {
                                $filename = $part->parameters[$i]->value;

                                break;
                            }
                        }

                        if (is_null($filename))
                        {
                            if ($part->ifdparameters == 1)
                            {
                                $total_dparameters = count($part->dparameters);

                                for ($i = 0; $i < $total_dparameters; $i++)
                                {
                                    if (($part->dparameters[$i]->attribute == 'NAME') || ($part->dparameters[$i]->attribute == 'FILENAME'))
                                    {
                                        $filename = $part->dparameters[$i]->value;

                                        break;
                                    }
                                }
                            }
                        }
                    }

                    $result['attachments'][] = array
                    (
                        'filename' => $filename,
                        'content' => str_replace(array("\r", "\n"), '', trim(imap_fetchbody($this->connection, $id, ($key + 1), FT_UID))),
                    );
                }

                else
                {
                    if ($part->subtype == 'PLAIN')
                    {
                        $result['text'] = imap_fetchbody($this->connection, $id, ($key + 1), FT_UID);
                    }

                    else if ($part->subtype == 'HTML')
                    {
                        $result['html'] = imap_fetchbody($this->connection, $id, ($key + 1), FT_UID);
                    }

                    else
                    {
                        foreach ($part->parts as $alternative_key => $alternative_part)
                        {
                            if ($alternative_part->subtype == 'PLAIN')
                            {
                                echo '
' . $alternative_part->subtype . ' ' . $alternative_part->encoding . '
';

                                $result['text'] = imap_fetchbody($this->connection, $id, ($key + 1) . '.' . ($alternative_key + 1), FT_UID);
                            }

                            else if ($alternative_part->subtype == 'HTML')
                            {
                                echo '
' . $alternative_part->subtype . ' ' . $alternative_part->encoding . '
';

                                $result['html'] = imap_fetchbody($this->connection, $id, ($key + 1) . '.' . ($alternative_key + 1), FT_UID);
                            }
                        }
                    }
                }
            }
        }

        else
        {
            $result['text'] = imap_body($this->connection, $id, FT_UID);
        }

        $result['text'] = imap_qprint($result['text']);
        $result['html'] = imap_qprint(imap_8bit($result['html']));

        return $result;
    }

    return false;
}

I've never tested it deeply and I'm sure it has some bugs, but it might be a start... After adapting this code you should be able to use the $result indexes (text, html, attachments) with your forwarding script (using SwiftMailer for instance), without worrying about keeping the MIME boundaries intact.