htmlMimeMail.php 28.3 KB
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<?php 
/**
* This file is part of the htmlMimeMail package (http://www.phpguru.org/)
*
* htmlMimeMail is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* htmlMimeMail is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with htmlMimeMail; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
* 
* © Copyright 2004 Richard Heyes
*/

require_once(dirname(__FILE__) . '/mimePart.php');

class htmlMimeMail
{
    /**
    * The html part of the message
    * @var string
    */
    var $html;

    /**
    * The text part of the message(only used in TEXT only messages)
    * @var string
    */
    var $text;

    /**
    * The main body of the message after building
    * @var string
    */
    var $output;

    /**
    * The alternative text to the HTML part (only used in HTML messages)
    * @var string
    */
    var $html_text;

    /**
    * An array of embedded images/objects
    * @var array
    */
    var $html_images;

    /**
    * An array of recognised image types for the findHtmlImages() method
    * @var array
    */
    var $image_types;

    /**
    * Parameters that affect the build process
    * @var array
    */
    var $build_params;

    /**
    * Array of attachments
    * @var array
    */
    var $attachments;

    /**
    * The main message headers
    * @var array
    */
    var $headers;

    /**
    * Whether the message has been built or not
    * @var boolean
    */
    var $is_built;
    
    /**
    * The return path address. If not set the From:
    * address is used instead
    * @var string
    */
    var $return_path;
    
    /**
    * Array of information needed for smtp sending
    * @var array
    */
    var $smtp_params;

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    var $sendmail_path;

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    /**
    * Constructor function. Sets the headers
    * if supplied.
    */
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    public function __construct()
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    {
        /**
        * Initialise some variables.
        */
        $this->html_images = array();
        $this->headers     = array();
        $this->is_built    = false;
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        $this->sendmail_path = '/usr/lib/sendmail -ti';
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        /**
        * If you want the auto load functionality
        * to find other image/file types, add the
        * extension and content type here.
        */
        $this->image_types = array(
                                    'gif'	=> 'image/gif',
                                    'jpg'	=> 'image/jpeg',
                                    'jpeg'	=> 'image/jpeg',
                                    'jpe'	=> 'image/jpeg',
                                    'bmp'	=> 'image/bmp',
                                    'png'	=> 'image/png',
                                    'tif'	=> 'image/tiff',
                                    'tiff'	=> 'image/tiff',
                                    'swf'	=> 'application/x-shockwave-flash'
                                  );

        /**
        * Set these up
        */
        $this->build_params['html_encoding'] = 'quoted-printable';
        $this->build_params['text_encoding'] = '7bit';
        $this->build_params['html_charset']  = 'ISO-8859-1';
        $this->build_params['text_charset']  = 'ISO-8859-1';
        $this->build_params['head_charset']  = 'ISO-8859-1';
        $this->build_params['text_wrap']     = 998;

        /**
        * Defaults for smtp sending
        */
        if (!empty($GLOBALS['HTTP_SERVER_VARS']['HTTP_HOST'])) {
            $helo = $GLOBALS['HTTP_SERVER_VARS']['HTTP_HOST'];
        } elseif (!empty($GLOBALS['HTTP_SERVER_VARS']['SERVER_NAME'])) {
            $helo = $GLOBALS['HTTP_SERVER_VARS']['SERVER_NAME'];
        } else {
            $helo = 'localhost';
        }

        $this->smtp_params['host'] = 'localhost';
        $this->smtp_params['port'] = 25;
        $this->smtp_params['helo'] = $helo;
        $this->smtp_params['auth'] = false;
        $this->smtp_params['user'] = '';
        $this->smtp_params['pass'] = '';

        /**
        * Make sure the MIME version header is first.
        */
        $this->headers['MIME-Version'] = '1.0';
    }

    /**
    * This function will read a file in
    * from a supplied filename and return
    * it. This can then be given as the first
    * argument of the the functions
    * add_html_image() or add_attachment().
    */
    function getFile($filename)
    {
        $return = '';
        if ($fp = fopen($filename, 'rb')) {
            while (!feof($fp)) {
                $return .= fread($fp, 1024);
            }
            fclose($fp);
            return $return;

        } else {
            return false;
        }
    }

    /**
    * Accessor to set the CRLF style
    */
    function setCrlf($crlf = "\n")
    {
        if (!defined('CRLF')) {
            define('CRLF', $crlf, true);
        }

        if (!defined('MAIL_MIMEPART_CRLF')) {
            define('MAIL_MIMEPART_CRLF', $crlf, true);
        }
    }

    /**
    * Accessor to set the SMTP parameters
    */
    function setSMTPParams($host = null, $port = null, $helo = null, $auth = null, $user = null, $pass = null)
    {
        if (!is_null($host)) $this->smtp_params['host'] = $host;
        if (!is_null($port)) $this->smtp_params['port'] = $port;
        if (!is_null($helo)) $this->smtp_params['helo'] = $helo;
        if (!is_null($auth)) $this->smtp_params['auth'] = $auth;
        if (!is_null($user)) $this->smtp_params['user'] = $user;
        if (!is_null($pass)) $this->smtp_params['pass'] = $pass;
    }

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    /**
    * Sets sendmail path and options (optionally) (when directly piping to sendmail)
   */
	    function setSendmailPath($path)
	    {
	        $this->sendmail_path = $path;
	    }

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    /**
    * Accessor function to set the text encoding
    */
    function setTextEncoding($encoding = '7bit')
    {
        $this->build_params['text_encoding'] = $encoding;
    }

    /**
    * Accessor function to set the HTML encoding
    */
    function setHtmlEncoding($encoding = 'quoted-printable')
    {
        $this->build_params['html_encoding'] = $encoding;
    }

    /**
    * Accessor function to set the text charset
    */
    function setTextCharset($charset = 'ISO-8859-1')
    {
        $this->build_params['text_charset'] = $charset;
    }

    /**
    * Accessor function to set the HTML charset
    */
    function setHtmlCharset($charset = 'ISO-8859-1')
    {
        $this->build_params['html_charset'] = $charset;
    }

    /**
    * Accessor function to set the header encoding charset
    */
    function setHeadCharset($charset = 'ISO-8859-1')
    {
        $this->build_params['head_charset'] = $charset;
    }

    /**
    * Accessor function to set the text wrap count
    */
    function setTextWrap($count = 998)
    {
        $this->build_params['text_wrap'] = $count;
    }

    /**
    * Accessor to set a header
    */
    function setHeader($name, $value)
    {
        $this->headers[$name] = $value;
    }

    /**
    * Accessor to add a Subject: header
    */
    function setSubject($subject)
    {
        $this->headers['Subject'] = $subject;
    }

    /**
    * Accessor to add a From: header
    */
    function setFrom($from)
    {
        $this->headers['From'] = $from;
    }

    /**
    * Accessor to set the return path
    */
    function setReturnPath($return_path)
    {
        $this->return_path = $return_path;
    }

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    /**
    * Accessor to set the Disposition-Notification-To
    */
    function setDispositionNotificationTo($email)
    {
        $this->headers['Disposition-Notification-To'] = $email;
    }

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    /**
    * Accessor to set the reply-to
    */
    function setReplyTo($replyTo)
    {
        $this->headers['Reply-To'] = $replyTo;
    }

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    /**
    * Accessor to add a Cc: header
    */
    function setCc($cc)
    {
        $this->headers['Cc'] = $cc;
    }

    /**
    * Accessor to add a Bcc: header
    */
    function setBcc($bcc)
    {
        $this->headers['Bcc'] = $bcc;
    }

    /**
    * Adds plain text. Use this function
    * when NOT sending html email
    */
    function setText($text = '')
    {
        $this->text = $text;
    }

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	/**
    * Adds notification to
    */
    function setNotification($mail)
    {
        $this->headers['Disposition-Notification-To'] = $mail;
    }

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    /**
    * Adds a html part to the mail.
    * Also replaces image names with
    * content-id's.
    */
    function setHtml($html, $text = null, $images_dir = null)
    {
        $this->html      = $html;
        $this->html_text = $text;

        if (isset($images_dir)) {
            $this->_findHtmlImages($images_dir);
        }
    }

    /**
    * Function for extracting images from
    * html source. This function will look
    * through the html code supplied by add_html()
    * and find any file that ends in one of the
    * extensions defined in $obj->image_types.
    * If the file exists it will read it in and
    * embed it, (not an attachment).
    *
    * @author Dan Allen
    */
    function _findHtmlImages($images_dir)
    {
        // Build the list of image extensions
        while (list($key,) = each($this->image_types)) {
            $extensions[] = $key;
        }

        preg_match_all('/(?:"|\')([^"\']+\.('.implode('|', $extensions).'))(?:"|\')/Ui', $this->html, $images);

        for ($i=0; $i<count($images[1]); $i++) {
            if (file_exists($images_dir . $images[1][$i])) {
                $html_images[] = $images[1][$i];
                $this->html = str_replace($images[1][$i], basename($images[1][$i]), $this->html);
            }
        }

        if (!empty($html_images)) {

            // If duplicate images are embedded, they may show up as attachments, so remove them.
            $html_images = array_unique($html_images);
            sort($html_images);
    
            for ($i=0; $i<count($html_images); $i++) {
                if ($image = $this->getFile($images_dir.$html_images[$i])) {
                    $ext = substr($html_images[$i], strrpos($html_images[$i], '.') + 1);
                    $content_type = $this->image_types[strtolower($ext)];
                    $this->addHtmlImage($image, basename($html_images[$i]), $content_type);
                }
            }
        }
    }

    /**
    * Adds an image to the list of embedded
    * images.
    */
    function addHtmlImage($file, $name = '', $c_type='application/octet-stream')
    {
        $this->html_images[] = array(
                                        'body'   => $file,
                                        'name'   => $name,
                                        'c_type' => $c_type,
                                        'cid'    => md5(uniqid(time()))
                                    );
    }


    /**
    * Adds a file to the list of attachments.
    */
    function addAttachment($file, $name = '', $c_type='application/octet-stream', $encoding = 'base64')
    {
        $this->attachments[] = array(
                                    'body'		=> $file,
                                    'name'		=> $name,
                                    'c_type'	=> $c_type,
                                    'encoding'	=> $encoding
                                  );
    }

    /**
    * Adds a text subpart to a mime_part object
    */
    function &_addTextPart(&$obj, $text)
    {
        $params['content_type'] = 'text/plain';
        $params['encoding']     = $this->build_params['text_encoding'];
        $params['charset']      = $this->build_params['text_charset'];
        if (is_object($obj)) {
            $return = $obj->addSubpart($text, $params);
        } else {
            $return = new Mail_mimePart($text, $params);
        }
        
        return $return;
    }

    /**
    * Adds a html subpart to a mime_part object
    */
    function &_addHtmlPart(&$obj)
    {
        $params['content_type'] = 'text/html';
        $params['encoding']     = $this->build_params['html_encoding'];
        $params['charset']      = $this->build_params['html_charset'];
        if (is_object($obj)) {
            $return = $obj->addSubpart($this->html, $params);
        } else {
            $return = new Mail_mimePart($this->html, $params);
        }
        
        return $return;
    }

    /**
    * Starts a message with a mixed part
    */
    function &_addMixedPart()
    {
        $params['content_type'] = 'multipart/mixed';
        $return = new Mail_mimePart('', $params);
        
        return $return;
    }

    /**
    * Adds an alternative part to a mime_part object
    */
    function &_addAlternativePart(&$obj)
    {
        $params['content_type'] = 'multipart/alternative';
        if (is_object($obj)) {
            $return = $obj->addSubpart('', $params);
        } else {
            $return = new Mail_mimePart('', $params);
        }
        
        return $return;
    }

    /**
    * Adds a html subpart to a mime_part object
    */
    function &_addRelatedPart(&$obj)
    {
        $params['content_type'] = 'multipart/related';
        if (is_object($obj)) {
            $return = $obj->addSubpart('', $params);
        } else {
            $return = new Mail_mimePart('', $params);
        }
        
        return $return;
    }

    /**
    * Adds an html image subpart to a mime_part object
    */
    function _addHtmlImagePart(&$obj, $value)
    {
        $params['content_type'] = $value['c_type'];
        $params['encoding']     = 'base64';
        $params['disposition']  = 'inline';
        $params['dfilename']    = $value['name'];
        $params['cid']          = $value['cid'];
        $obj->addSubpart($value['body'], $params);
    }

    /**
    * Adds an attachment subpart to a mime_part object
    */
    function _addAttachmentPart(&$obj, $value)
    {
        $params['content_type'] = $value['c_type'];
        $params['encoding']     = $value['encoding'];
        $params['disposition']  = 'attachment';
        $params['dfilename']    = $value['name'];
        $obj->addSubpart($value['body'], $params);
    }

    /**
    * Builds the multipart message from the
    * list ($this->_parts). $params is an
    * array of parameters that shape the building
    * of the message. Currently supported are:
    *
    * $params['html_encoding'] - The type of encoding to use on html. Valid options are
    *                            "7bit", "quoted-printable" or "base64" (all without quotes).
    *                            7bit is EXPRESSLY NOT RECOMMENDED. Default is quoted-printable
    * $params['text_encoding'] - The type of encoding to use on plain text Valid options are
    *                            "7bit", "quoted-printable" or "base64" (all without quotes).
    *                            Default is 7bit
    * $params['text_wrap']     - The character count at which to wrap 7bit encoded data.
    *                            Default this is 998.
    * $params['html_charset']  - The character set to use for a html section.
    *                            Default is ISO-8859-1
    * $params['text_charset']  - The character set to use for a text section.
    *                          - Default is ISO-8859-1
    * $params['head_charset']  - The character set to use for header encoding should it be needed.
    *                          - Default is ISO-8859-1
    */
    function buildMessage($params = array())
    {
        if (!empty($params)) {
            while (list($key, $value) = each($params)) {
                $this->build_params[$key] = $value;
            }
        }

        if (!empty($this->html_images)) {
            foreach ($this->html_images as $value) {
                $this->html = str_replace($value['name'], 'cid:'.$value['cid'], $this->html);
            }
        }

        $null        = null;
        $attachments = !empty($this->attachments) ? true : false;
        $html_images = !empty($this->html_images) ? true : false;
        $html        = !empty($this->html)        ? true : false;
        $text        = isset($this->text)         ? true : false;

        switch (true) {
            case $text AND !$attachments:
                $message = &$this->_addTextPart($null, $this->text);
                break;

            case !$text AND $attachments AND !$html:
                $message = &$this->_addMixedPart();

                for ($i=0; $i<count($this->attachments); $i++) {
                    $this->_addAttachmentPart($message, $this->attachments[$i]);
                }
                break;

            case $text AND $attachments:
                $message = &$this->_addMixedPart();
                $this->_addTextPart($message, $this->text);

                for ($i=0; $i<count($this->attachments); $i++) {
                    $this->_addAttachmentPart($message, $this->attachments[$i]);
                }
                break;

            case $html AND !$attachments AND !$html_images:
                if (!is_null($this->html_text)) {
                    $message = &$this->_addAlternativePart($null);
                    $this->_addTextPart($message, $this->html_text);
                    $this->_addHtmlPart($message);
                } else {
                    $message = &$this->_addHtmlPart($null);
                }
                break;

            case $html AND !$attachments AND $html_images:
                if (!is_null($this->html_text)) {
                    $message = &$this->_addAlternativePart($null);
                    $this->_addTextPart($message, $this->html_text);
                    $related = &$this->_addRelatedPart($message);
                } else {
                    $message = &$this->_addRelatedPart($null);
                    $related = &$message;
                }
                $this->_addHtmlPart($related);
                for ($i=0; $i<count($this->html_images); $i++) {
                    $this->_addHtmlImagePart($related, $this->html_images[$i]);
                }
                break;

            case $html AND $attachments AND !$html_images:
                $message = &$this->_addMixedPart();
                if (!is_null($this->html_text)) {
                    $alt = &$this->_addAlternativePart($message);
                    $this->_addTextPart($alt, $this->html_text);
                    $this->_addHtmlPart($alt);
                } else {
                    $this->_addHtmlPart($message);
                }
                for ($i=0; $i<count($this->attachments); $i++) {
                    $this->_addAttachmentPart($message, $this->attachments[$i]);
                }
                break;

            case $html AND $attachments AND $html_images:
                $message = &$this->_addMixedPart();
                if (!is_null($this->html_text)) {
                    $alt = &$this->_addAlternativePart($message);
                    $this->_addTextPart($alt, $this->html_text);
                    $rel = &$this->_addRelatedPart($alt);
                } else {
                    $rel = &$this->_addRelatedPart($message);
                }
                $this->_addHtmlPart($rel);
                for ($i=0; $i<count($this->html_images); $i++) {
                    $this->_addHtmlImagePart($rel, $this->html_images[$i]);
                }
                for ($i=0; $i<count($this->attachments); $i++) {
                    $this->_addAttachmentPart($message, $this->attachments[$i]);
                }
                break;

        }

        if (isset($message)) {
            $output = $message->encode();
            $this->output   = $output['body'];
            $this->headers  = array_merge($this->headers, $output['headers']);

            // Add message ID header
            srand((double)microtime()*10000000);
            $message_id = sprintf('<%s.%s@%s>', base_convert(time(), 10, 36), base_convert(rand(), 10, 36), !empty($GLOBALS['HTTP_SERVER_VARS']['HTTP_HOST']) ? $GLOBALS['HTTP_SERVER_VARS']['HTTP_HOST'] : $GLOBALS['HTTP_SERVER_VARS']['SERVER_NAME']);
            $this->headers['Message-ID'] = $message_id;

            $this->is_built = true;
            return true;
        } else {
            return false;
        }
    }

    /**
    * Function to encode a header if necessary
    * according to RFC2047
    */
    function _encodeHeader($input, $charset = 'ISO-8859-1')
    {
        preg_match_all('/(\s?\w*[\x80-\xFF]+\w*\s?)/', $input, $matches);
        foreach ($matches[1] as $value) {
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            $replacement = @preg_replace('/([\x20\x80-\xFF])/e', '"=" . strtoupper(dechex(ord("\1")))', $value);
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            $input = str_replace($value, '=?' . $charset . '?Q?' . $replacement . '?=', $input);
        }
        
        return $input;
    }

    /**
    * Sends the mail.
    *
    * @param  array  $recipients
    * @param  string $type OPTIONAL
    * @return mixed
    */
    function send($recipients, $type = 'mail')
    {
        if (!defined('CRLF')) {
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            $this->setCrlf( ($type == 'mail' OR $type == 'sendmail') ? "\n" : "\r\n");
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        }

        if (!$this->is_built) {
            $this->buildMessage();
        }

        switch ($type) {
            case 'mail':
                $subject = '';
                if (!empty($this->headers['Subject'])) {
                    $subject = $this->_encodeHeader($this->headers['Subject'], $this->build_params['head_charset']);
                    unset($this->headers['Subject']);
                }

                // Get flat representation of headers
                foreach ($this->headers as $name => $value) {
                    $headers[] = $name . ': ' . $this->_encodeHeader($value, $this->build_params['head_charset']);
                }

                $to = $this->_encodeHeader(implode(', ', $recipients), $this->build_params['head_charset']);

                if (!empty($this->return_path)) {
                    $result = mail($to, $subject, $this->output, implode(CRLF, $headers), '-f' . $this->return_path);
                } else {
                    $result = mail($to, $subject, $this->output, implode(CRLF, $headers));
                }
                
                // Reset the subject in case mail is resent
                if ($subject !== '') {
                    $this->headers['Subject'] = $subject;
                }
                
                // Return
                return $result;
                break;

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            case 'sendmail':
	                // Get flat representation of headers
	                foreach ($this->headers as $name => $value) {
	                    $headers[] = $name . ': ' . $this->_encodeHeader($value, $this->build_params['head_charset']);
	                }
	 
	                // Encode To:
	                $headers[] = 'To: ' . $this->_encodeHeader(implode(', ', $recipients), $this->build_params['head_charset']);
	 
	                // Get return path arg for sendmail command if necessary
	                $returnPath = '';
	                if (!empty($this->return_path)) {
	                    $returnPath = '-f' . $this->return_path;
	                }
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                    if(ini_get('sendmail_path') <> ""){
                      $this->setSendmailPath(ini_get('sendmail_path'));  
                    }
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	                $pipe = popen($this->sendmail_path . " " . $returnPath, 'w');
	                    $bytes = fputs($pipe, implode(CRLF, $headers) . CRLF . CRLF . $this->output);
	                $r = pclose($pipe);
	 
	                return $r;
	                break;

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            case 'smtp':
                require_once(dirname(__FILE__) . '/smtp.php');
                require_once(dirname(__FILE__) . '/RFC822.php');
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                $smtpObj = new smtpHtmlMimeMail($this->smtp_params);
                $RFC822Obj = new Mail_RFC822();
                $smtp = $smtpObj->connect();
                
                if (!$smtp) {
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                    return $smtpObj->errors;
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                }
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                // Parse recipients argument for internet addresses
                foreach ($recipients as $recipient) {
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                    $addresses = $RFC822Obj->parseAddressList($recipient, $this->smtp_params['helo'], null, false);
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                    foreach ($addresses as $address) {
                        $smtp_recipients[] = sprintf('%s@%s', $address->mailbox, $address->host);
                    }
                }
                unset($addresses); // These are reused
                unset($address);   // These are reused

                // Get flat representation of headers, parsing
                // Cc and Bcc as we go
                foreach ($this->headers as $name => $value) {
                    if ($name == 'Cc' OR $name == 'Bcc') {
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                        $addresses = $RFC822Obj->parseAddressList($value, $this->smtp_params['helo'], null, false);
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                        foreach ($addresses as $address) {
                            $smtp_recipients[] = sprintf('%s@%s', $address->mailbox, $address->host);
                        }
                    }
                    if ($name == 'Bcc') {
                        continue;
                    }
                    $headers[] = $name . ': ' . $this->_encodeHeader($value, $this->build_params['head_charset']);
                }
                // Add To header based on $recipients argument
                $headers[] = 'To: ' . $this->_encodeHeader(implode(', ', $recipients), $this->build_params['head_charset']);
                
                // Add headers to send_params
                $send_params['headers']    = $headers;
                $send_params['recipients'] = array_values(array_unique($smtp_recipients));
                $send_params['body']       = $this->output;

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                // Add Notification To
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                if (isset($this->headers['Disposition-Notification-To'])) {
                    $send_params['Disposition-Notification-To'] = $this->headers['Disposition-Notification-To'];
                }

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                // Setup return path
                if (isset($this->return_path)) {
                    $send_params['from'] = $this->return_path;
                } elseif (!empty($this->headers['From'])) {
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                    $from = $RFC822Obj->parseAddressList($this->headers['From']);
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                    $send_params['from'] = sprintf('%s@%s', $from[0]->mailbox, $from[0]->host);
                } else {
                    $send_params['from'] = 'postmaster@' . $this->smtp_params['helo'];
                }

                // Send it
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                if (!$smtpObj->send($send_params)) {
                    $this->errors = $smtpObj->errors;
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                    return $this->errors;
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                }
                return true;
                break;
        }
    }

    /**
    * Use this method to return the email
    * in message/rfc822 format. Useful for
    * adding an email to another email as
    * an attachment. there's a commented
    * out example in example.php.
    */
    function getRFC822($recipients)
    {
        // Make up the date header as according to RFC822
        $this->setHeader('Date', date('D, d M y H:i:s O'));

        if (!defined('CRLF')) {
            $this->setCrlf($type == 'mail' ? "\n" : "\r\n");
        }

        if (!$this->is_built) {
            $this->buildMessage();
        }

        // Return path ?
        if (isset($this->return_path)) {
            $headers[] = 'Return-Path: ' . $this->return_path;
        }

        // Get flat representation of headers
        foreach ($this->headers as $name => $value) {
            $headers[] = $name . ': ' . $value;
        }
        $headers[] = 'To: ' . implode(', ', $recipients);

        return implode(CRLF, $headers) . CRLF . CRLF . $this->output;
    }
} // End of class.
?>