php Mailer class

class EmailHandler
{
    private $recipients = array();
    private $subject = '';
    private $htmlmessage = '';
    private $textmessage = '';
    private $headers = array();
    private $attachments = array();
    private $tokens = array();
    private $prep_data = array();

    function __construct($email)
    {
        //Set the "From" address
        $this->headers['From'] = $email;
    }

    /************\
    * Recipients *
    \************/
    function addRecipient($email)
    {
        //Add a recipient
        $this->recipients[] = $email;
        return true;
    }

    function removeRecipient($email)
    {
        //Remove a recipient
        foreach ($this->recipients as $index=>$val)
        {
            if ($val == $email)
            {
                    unset($this->recipients[$index]);
                    return true;
            }
        }
        return false;
    }

    function getRecipients()
    {
        //Return the list of recipients
        return $this->recipients;
    }


    /*********\
    * Headers *
    \*********/
    function setHeader($header, $value)
    {
        //Set an Email Header
        $this->headers[$header] = $value;
        return true;
    }

    function removeHeader($header)
    {
        //Remove an Email Header
        unset($this->headers[$header]);
        return true;
    }

    function getHeaders()
    {
        //Return the list of email headers
        return $this->headers;
    }

    /*********\
    * Message *
    \*********/
    function setHTML($message)
    {
        //Set the HTML verison of the message
        $this->htmlmessage = $message;
        return true;
    }

    function setText($message)
    {
        //Set the plaintext version of the message
        $this->textmessage = $message;
        return true;
    }

    function setSubject($subject)
    {
        //Set the message subject
        $this->subject = $subject;
        return true;
    }

    function getHTML()
    {
        //Get the HTML version of the message
        return $this->htmlmessage;
    }

    function getText()
    {
        //Get the plaintext version of the message
        return $this->textmessage;
    }

    function getSubject()
    {
        //Get the message subject
        return $this->subject;
    }

    /********\
    * Tokens *
    \********/
    function setToken($tag, $value)
    {
        //Set a token (TAG will replace {TAG} in the message bodies and subject)

        //TODO: Implement this feature
        $this->tokens[$tag] = $value;
        return true;
    }

    function removeToken($tag)
    {
        //Removes a token
        unset($this->tokens[$tag]);
        return true;
    }

    function getTokens()
    {
        //Returns the list of tokens
        return $this->tokens;
    }

    /*************\
    * Attachments *
    \*************/
    function addAttachment($filepath, $filename)
    {
        //Attaches a file if it exists
        if($contents = file_get_contents($filepath))
        {
            $this->attachments[$filename]['contents'] = $contents;
            $this->attachments[$filename]['type'] = mime_content_type($filepath);
            return true;
        } else {
            return false;
        }
    }

    function removeAttachment($filename)
    {
        //Removes an attached file
        unset($this->attachments[$filename]);
        return true;
    }

    /************\
    * Processing *
    \************/
    function prepData()
    {
        //Processes and prepares data for sending/queueing

        $random_hash = md5(date('r', time()));
        $this->headers['Content-Type'] = 'multipart/mixed; boundary="PHP-mixed-'.$random_hash.'"';

        $message = '--PHP-mixed-'.$random_hash.''."\r\n".'Content-Type: multipart/alternative; boundary="PHP-alt-'.$random_hash.'"'."\r\n\r\n";
        if($this->textmessage != '')
        {
            $message .= '--PHP-alt-'.$random_hash.''."\r\n".'Content-Type: text/plain; charset="iso-8859-1"'."\r\n".'Content-Transfer-Encoding: 7bit'."\r\n\r\n" . $this->textmessage . "\r\n\r\n";
        }

        if($this->htmlmessage != '')
        {
            $message .= '--PHP-alt-'.$random_hash.''."\r\n".'Content-Type: text/html; charset="iso-8859-1"'."\r\n".'Content-Transfer-Encoding: 7bit'."\r\n\r\n" . $this->htmlmessage . "\r\n\r\n";
        }

        $message .= '--PHP-alt-'.$random_hash.'--'."\r\n\r\n";

        if(!empty($this->attachments))
        {
            foreach ($this->attachments as $fname=>$fcontents)
            {
                $contents = chunk_split(base64_encode($fcontents['contents']));
                $filetype = $fcontents['type'];

                $message .= '--PHP-mixed-'.$random_hash.''."\r\n".'Content-Type: '.$filetype.'; name="'.$fname.'"'."\r\n".'Content-Transfer-Encoding: base64'."\r\n".'Content-Disposition: attachment'."\r\n".''."\r\n".''.$contents ."\r\n\r\n";
            }
        }

        $message .= '--PHP-mixed-'.$random_hash.'--';

        $headerlist = '';
        foreach($this->headers as $key=>$val)
        {
            $headerlist .= $key . ": " . $val . "\r\n";
        }

        $recipientlist = implode(', ', $this->recipients);

        $this->prep_data['headers'] = $headerlist;
        $this->prep_data['message'] = $message;
        $this->prep_data['subject'] = $this->subject;
        $this->prep_data['recipients'] = $recipientlist;
        return true;
    }

    function queue()
    {
        //Add this email to the queue
        global $db;
        $this->prepData();
        $db->query("INSERT INTO mail.mail_queue
            VALUES (
                NULL,
                '" . mysql_real_escape_string($this->prep_data['recipients']) . "',
                '" . mysql_real_escape_string($this->prep_data['subject']) . "',
                '" . mysql_real_escape_string($this->prep_data['message']) . "',
                '" . mysql_real_escape_string($this->prep_data['headers']) . "',
                0
            )
        ");
        return true;
    }

    function send()
    {
        //Send email immediately
        $this->prepData();
        mail($this->prep_data['recipients'], $this->prep_data['subject'], $this->prep_data['message'], $this->prep_data['headers']);
        return true;
    }

    function debug()
    {
        //Spit out the prepped data for debugging
        $this->prepData();
        return $this->prep_data;
    }

}