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333 lines
11 KiB
PHP
333 lines
11 KiB
PHP
<?php
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//
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2002 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 2.02 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available at through the world-wide-web at |
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// | http://www.php.net/license/2_02.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Authors: Richard Heyes <richard@phpguru.org> |
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// +----------------------------------------------------------------------+
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/**
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*
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* Raw mime encoding class
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*
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* What is it?
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* This class enables you to manipulate and build
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* a mime email from the ground up.
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*
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* Why use this instead of mime.php?
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* mime.php is a userfriendly api to this class for
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* people who aren't interested in the internals of
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* mime mail. This class however allows full control
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* over the email.
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*
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* Eg.
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*
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* // Since multipart/mixed has no real body, (the body is
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* // the subpart), we set the body argument to blank.
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*
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* $params['content_type'] = 'multipart/mixed';
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* $email = new Mail_mimePart('', $params);
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*
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* // Here we add a text part to the multipart we have
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* // already. Assume $body contains plain text.
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*
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* $params['content_type'] = 'text/plain';
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* $params['encoding'] = '7bit';
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* $text = $email->addSubPart($body, $params);
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*
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* // Now add an attachment. Assume $attach is
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* the contents of the attachment
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*
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* $params['content_type'] = 'application/zip';
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* $params['encoding'] = 'base64';
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* $params['disposition'] = 'attachment';
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* $params['dfilename'] = 'example.zip';
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* $attach =& $email->addSubPart($body, $params);
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*
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* // Now build the email. Note that the encode
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* // function returns an associative array containing two
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* // elements, body and headers. You will need to add extra
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* // headers, (eg. Mime-Version) before sending.
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*
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* $email = $message->encode();
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* $email['headers'][] = 'Mime-Version: 1.0';
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*
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*
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* Further examples are available at http://www.phpguru.org
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*
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* TODO:
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* - Set encode() to return the $obj->encoded if encode()
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* has already been run. Unless a flag is passed to specifically
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* re-build the message.
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*
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* @author Richard Heyes <richard@phpguru.org>
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* @version $Revision: 1.1 $
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* @package Mail
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*/
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class Mail_mimePart {
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/**
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* The encoding type of this part
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* @var string
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*/
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var $_encoding;
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/**
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* An array of subparts
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* @var array
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*/
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var $_subparts;
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/**
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* The output of this part after being built
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* @var string
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*/
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var $_encoded;
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/**
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* Headers for this part
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* @var array
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*/
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var $_headers;
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/**
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* The body of this part (not encoded)
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* @var string
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*/
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var $_body;
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/**
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* Constructor.
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*
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* Sets up the object.
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*
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* @param $body - The body of the mime part if any.
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* @param $params - An associative array of parameters:
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* content_type - The content type for this part eg multipart/mixed
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* encoding - The encoding to use, 7bit, 8bit, base64, or quoted-printable
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* cid - Content ID to apply
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* disposition - Content disposition, inline or attachment
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* dfilename - Optional filename parameter for content disposition
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* description - Content description
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* charset - Character set to use
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* @access public
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*/
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function Mail_mimePart($body = '', $params = array())
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{
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if (!defined('MAIL_MIMEPART_CRLF')) {
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define('MAIL_MIMEPART_CRLF', defined('MAIL_MIME_CRLF') ? MAIL_MIME_CRLF : "\r\n", TRUE);
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}
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foreach ($params as $key => $value) {
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switch ($key) {
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case 'content_type':
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$headers['Content-Type'] = $value . (isset($charset) ? '; charset="' . $charset . '"' : '');
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break;
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case 'encoding':
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$this->_encoding = $value;
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$headers['Content-Transfer-Encoding'] = $value;
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break;
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case 'cid':
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$headers['Content-ID'] = '<' . $value . '>';
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break;
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case 'disposition':
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$headers['Content-Disposition'] = $value . (isset($dfilename) ? '; filename="' . $dfilename . '"' : '');
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break;
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case 'dfilename':
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if (isset($headers['Content-Disposition'])) {
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$headers['Content-Disposition'] .= '; filename="' . $value . '"';
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} else {
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$dfilename = $value;
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}
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break;
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case 'description':
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$headers['Content-Description'] = $value;
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break;
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case 'charset':
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if (isset($headers['Content-Type'])) {
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$headers['Content-Type'] .= '; charset="' . $value . '"';
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} else {
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$charset = $value;
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}
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break;
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}
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}
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// Default content-type
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if (!isset($headers['Content-Type'])) {
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$headers['Content-Type'] = 'text/plain';
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}
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//Default encoding
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if (!isset($this->_encoding)) {
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$this->_encoding = '7bit';
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}
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// Assign stuff to member variables
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$this->_encoded = array();
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$this->_headers = $headers;
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$this->_body = $body;
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}
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/**
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* encode()
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*
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* Encodes and returns the email. Also stores
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* it in the encoded member variable
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*
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* @return An associative array containing two elements,
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* body and headers. The headers element is itself
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* an indexed array.
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* @access public
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*/
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function encode()
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{
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$encoded =& $this->_encoded;
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if (!empty($this->_subparts)) {
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srand((double)microtime()*1000000);
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$boundary = '=_' . md5(uniqid(rand()) . microtime());
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$this->_headers['Content-Type'] .= ';' . MAIL_MIMEPART_CRLF . "\t" . 'boundary="' . $boundary . '"';
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// Add body parts to $subparts
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for ($i = 0; $i < count($this->_subparts); $i++) {
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$headers = array();
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$tmp = $this->_subparts[$i]->encode();
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foreach ($tmp['headers'] as $key => $value) {
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$headers[] = $key . ': ' . $value;
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}
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$subparts[] = implode(MAIL_MIMEPART_CRLF, $headers) . MAIL_MIMEPART_CRLF . MAIL_MIMEPART_CRLF . $tmp['body'];
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}
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$encoded['body'] = '--' . $boundary . MAIL_MIMEPART_CRLF .
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implode('--' . $boundary . MAIL_MIMEPART_CRLF, $subparts) .
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'--' . $boundary.'--' . MAIL_MIMEPART_CRLF;
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} else {
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$encoded['body'] = $this->_getEncodedData($this->_body, $this->_encoding) . MAIL_MIMEPART_CRLF;
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}
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// Add headers to $encoded
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$encoded['headers'] =& $this->_headers;
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return $encoded;
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}
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/**
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* &addSubPart()
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*
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* Adds a subpart to current mime part and returns
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* a reference to it
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*
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* @param $body The body of the subpart, if any.
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* @param $params The parameters for the subpart, same
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* as the $params argument for constructor.
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* @return A reference to the part you just added. It is
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* crucial if using multipart/* in your subparts that
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* you use =& in your script when calling this function,
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* otherwise you will not be able to add further subparts.
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* @access public
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*/
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function &addSubPart($body, $params)
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{
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$this->_subparts[] = new Mail_mimePart($body, $params);
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return $this->_subparts[count($this->_subparts) - 1];
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}
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/**
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* _getEncodedData()
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*
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* Returns encoded data based upon encoding passed to it
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*
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* @param $data The data to encode.
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* @param $encoding The encoding type to use, 7bit, base64,
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* or quoted-printable.
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* @access private
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*/
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function _getEncodedData($data, $encoding)
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{
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switch ($encoding) {
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case '8bit':
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case '7bit':
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return $data;
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break;
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case 'quoted-printable':
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return $this->_quotedPrintableEncode($data);
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break;
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case 'base64':
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return rtrim(chunk_split(base64_encode($data), 76, MAIL_MIMEPART_CRLF));
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break;
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default:
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return $data;
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}
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}
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/**
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* quoteadPrintableEncode()
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*
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* Encodes data to quoted-printable standard.
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*
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* @param $input The data to encode
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* @param $line_max Optional max line length. Should
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* not be more than 76 chars
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*
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* @access private
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*/
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function _quotedPrintableEncode($input , $line_max = 76)
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{
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$lines = preg_split("/\r?\n/", $input);
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$eol = MAIL_MIMEPART_CRLF;
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$escape = '=';
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$output = '';
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while(list(, $line) = each($lines)){
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$linlen = strlen($line);
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$newline = '';
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for ($i = 0; $i < $linlen; $i++) {
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$char = substr($line, $i, 1);
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$dec = ord($char);
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if (($dec == 32) AND ($i == ($linlen - 1))){ // convert space at eol only
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$char = '=20';
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} elseif($dec == 9) {
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; // Do nothing if a tab.
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} elseif(($dec == 61) OR ($dec < 32 ) OR ($dec > 126)) {
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$char = $escape . strtoupper(sprintf('%02s', dechex($dec)));
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}
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if ((strlen($newline) + strlen($char)) >= $line_max) { // MAIL_MIMEPART_CRLF is not counted
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$output .= $newline . $escape . $eol; // soft line break; " =\r\n" is okay
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$newline = '';
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}
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$newline .= $char;
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} // end of for
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$output .= $newline . $eol;
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}
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$output = substr($output, 0, -1 * strlen($eol)); // Don't want last crlf
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return $output;
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}
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} // End of class
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?>
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