class.phpmailer.php

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<?php
// PHPMailer - PHP email class
//
// Class for sending email using either
// sendmail, PHP mail(), or SMTP.  Methods are
// based upon the standard AspEmail(tm) classes.
//
// Copyright (C) 2001 - 2003  Brent R. Matzelle
//
// License: LGPL, see LICENSE
 
class PHPMailer
{
    // PUBLIC VARIABLES
 
    var $Priority = 3;
 
    var $CharSet = "iso-8859-1";
 
    var $ContentType = "text/plain";
 
    var $Encoding = "8bit";
 
    var $ErrorInfo = "";
 
    var $From = "root@localhost";
 
    var $FromName = "Root User";
 
    var $Sender = "";
 
    var $Subject = "";
 
    var $Body = "";
 
    var $AltBody = "";
 
    var $WordWrap = 0;
 
    var $Mailer = "mail";
 
    var $Sendmail = "/usr/sbin/sendmail";
 
    var $PluginDir = "";
 
    var $Version = "1.71";
 
    var $ConfirmReadingTo = "";
 
    var $Hostname = "";
 
    // SMTP VARIABLES
 
    var $Host = "localhost";
 
    var $Port = 25;
 
    var $Helo = "";
 
    var $SMTPAuth = false;
 
    var $Username = "";
 
    var $Password = "";
 
    var $Timeout = 10;
 
    var $SMTPDebug = false;
 
    var $SMTPKeepAlive = false;
 
    var $smtp = NULL;
    var $to = array(
        );
 
    var $cc = array(
        );
 
    var $bcc = array(
        );
 
    var $ReplyTo = array(
        );
 
    var $attachment = array(
        );
 
    var $CustomHeader = array(
        );
 
    var $message_type = "";
    var $boundary = array(
        );
 
    var $language = array(
        );
 
    var $error_count = 0;
    var $LE = "\n";
    // VARIABLE METHODS
 
    function IsHTML($bool)
    {
        if ($bool == true)
            $this->ContentType = "text/html";
        else
            $this->ContentType = "text/plain";
    }
 
    function IsSMTP()
    {
        $this->Mailer = "smtp";
    }
 
    function IsMail()
    {
        $this->Mailer = "mail";
    }
 
    function IsSendmail()
    {
        $this->Mailer = "sendmail";
    }
 
    function IsQmail()
    {
        $this->Sendmail = "/var/qmail/bin/sendmail";
        $this->Mailer = "sendmail";
    }
 
    // RECIPIENT METHODS
 
    function AddAddress($address, $name = "")
    {
        $cur = count($this->to);
        $this->to[$cur][0] = trim($address);
        $this->to[$cur][1] = $name;
    }
 
    function AddCC($address, $name = "")
    {
        $cur = count($this->cc);
        $this->cc[$cur][0] = trim($address);
        $this->cc[$cur][1] = $name;
    }
 
    function AddBCC($address, $name = "")
    {
        $cur = count($this->bcc);
        $this->bcc[$cur][0] = trim($address);
        $this->bcc[$cur][1] = $name;
    }
 
    function AddReplyTo($address, $name = "")
    {
        $cur = count($this->ReplyTo);
        $this->ReplyTo[$cur][0] = trim($address);
        $this->ReplyTo[$cur][1] = $name;
    }
 
    // MAIL SENDING METHODS
 
    function Send()
    {
        $header = "";
        $body = "";
 
        if ((count($this->to) + count($this->cc) + count($this->bcc)) < 1)
        {
            $this->SetError($this->Lang("provide_address"));
            return false;
        }
 
        // Set whether the message is multipart/alternative
        if (!empty($this->AltBody))
            $this->ContentType = "multipart/alternative";
 
        $this->SetMessageType();
        $header .= $this->CreateHeader();
        $body = $this->CreateBody();
 
        if ($body == "")
        {
            return false;
        }
 
        // Choose the mailer
        if ($this->Mailer == "sendmail")
        {
            if (!$this->SendmailSend($header, $body))
                return false;
        }
        elseif ($this->Mailer == "mail")
        {
            if (!$this->MailSend($header, $body))
                return false;
        }
        elseif ($this->Mailer == "smtp")
        {
            if (!$this->SmtpSend($header, $body))
                return false;
        }
        else
        {
            $this->SetError($this->Mailer . $this->Lang("mailer_not_supported"));
            return false;
        }
 
        return true;
    }
 
    function SendmailSend($header, $body)
    {
        if ($this->Sender != "")
            $sendmail = sprintf("%s -oi -f %s -t", $this->Sendmail, $this->Sender);
        else
            $sendmail = sprintf("%s -oi -t", $this->Sendmail);
 
        if (!@$mail = popen($sendmail, "w"))
        {
            $this->SetError($this->Lang("execute") . $this->Sendmail);
            return false;
        }
 
        fputs($mail, $header);
        fputs($mail, $body);
 
        $result = pclose($mail) >> 8 & 0xFF;
 
        if ($result != 0)
        {
            $this->SetError($this->Lang("execute") . $this->Sendmail);
            return false;
        }
 
        return true;
    }
 
    function MailSend($header, $body)
    {
        $to = "";
 
        for ($i = 0; $i < count($this->to); $i++)
        {
            if ($i != 0)
            {
                $to .= ", ";
            }
 
            $to .= $this->to[$i][0];
        }
 
        if ($this->Sender != "" && strlen(ini_get("safe_mode")) < 1)
        {
            $old_from = ini_get("sendmail_from");
            ini_set("sendmail_from", $this->Sender);
            $params = sprintf("-oi -f %s", $this->Sender);
            $rt = @mail($to, $this->EncodeHeader($this->Subject), $body, $header, $params);
        }
        else
            $rt = @mail($to, $this->EncodeHeader($this->Subject), $body, $header);
 
        if (isset($old_from))
            ini_set("sendmail_from", $old_from);
 
        if (!$rt)
        {
            $this->SetError($this->Lang("instantiate"));
            return false;
        }
 
        return true;
    }
 
    function SmtpSend($header, $body)
    {
        include_once ($this->PluginDir . "class.smtp.php");
        $error = "";
        $bad_rcpt = array(
            );
 
        if (!$this->SmtpConnect())
            return false;
 
        $smtp_from = ($this->Sender == "") ? $this->From : $this->Sender;
 
        if (!$this->smtp->Mail($smtp_from))
        {
            $error = $this->Lang("from_failed") . $smtp_from;
            $this->SetError($error);
            $this->smtp->Reset();
            return false;
        }
 
        // Attempt to send attach all recipients
        for ($i = 0; $i < count($this->to); $i++)
        {
            if (!$this->smtp->Recipient($this->to[$i][0]))
                $bad_rcpt[] = $this->to[$i][0];
        }
 
        for ($i = 0; $i < count($this->cc); $i++)
        {
            if (!$this->smtp->Recipient($this->cc[$i][0]))
                $bad_rcpt[] = $this->cc[$i][0];
        }
 
        for ($i = 0; $i < count($this->bcc); $i++)
        {
            if (!$this->smtp->Recipient($this->bcc[$i][0]))
                $bad_rcpt[] = $this->bcc[$i][0];
        }
 
        if (count($bad_rcpt) > 0) // Create error message
        {
            for ($i = 0; $i < count($bad_rcpt); $i++)
            {
                if ($i != 0)
                {
                    $error .= ", ";
                }
 
                $error .= $bad_rcpt[$i];
            }
 
            $error = $this->Lang("recipients_failed") . $error;
            $this->SetError($error);
            $this->smtp->Reset();
            return false;
        }
 
        if (!$this->smtp->Data($header . $body))
        {
            $this->SetError($this->Lang("data_not_accepted"));
            $this->smtp->Reset();
            return false;
        }
 
        if ($this->SMTPKeepAlive == true)
            $this->smtp->Reset();
        else
            $this->SmtpClose();
 
        return true;
    }
 
    function SmtpConnect()
    {
        if ($this->smtp == NULL)
        {
            $this->smtp = new SMTP();
        }
 
        $this->smtp->do_debug = $this->SMTPDebug;
        $hosts = explode(";", $this->Host);
        $index = 0;
        $connection = ($this->smtp->Connected());
 
        // Retry while there is no connection
        while ($index < count($hosts) && $connection == false)
        {
            if (strstr($hosts[$index], ":"))
                list($host, $port) = explode(":", $hosts[$index]);
            else
            {
                $host = $hosts[$index];
                $port = $this->Port;
            }
 
            if ($this->smtp->Connect($host, $port, $this->Timeout))
            {
                if ($this->Helo != '')
                    $this->smtp->Hello($this->Helo);
                else
                    $this->smtp->Hello($this->ServerHostname());
 
                if ($this->SMTPAuth)
                {
                    if (!$this->smtp->Authenticate($this->Username, $this->Password))
                    {
                        $this->SetError($this->Lang("authenticate"));
                        $this->smtp->Reset();
                        $connection = false;
                    }
                }
 
                $connection = true;
            }
 
            $index++;
        }
 
        if (!$connection)
            $this->SetError($this->Lang("connect_host"));
 
        return $connection;
    }
 
    function SmtpClose()
    {
        if ($this->smtp != NULL)
        {
            if ($this->smtp->Connected())
            {
                $this->smtp->Quit();
                $this->smtp->Close();
            }
        }
    }
 
    function SetLanguage($lang_type, $lang_path = "")
    {
        if (file_exists($lang_path . 'phpmailer.lang-' . $lang_type . '.php'))
            include ($lang_path . 'phpmailer.lang-' . $lang_type . '.php');
 
        else if (file_exists($lang_path . 'phpmailer.lang-en.php'))
            include ($lang_path . 'phpmailer.lang-en.php');
 
        else
        {
            $this->SetError("Could not load language file");
            return false;
        }
 
        $this->language = $PHPMAILER_LANG;
 
        return true;
    }
 
    // MESSAGE CREATION METHODS
 
    function AddrAppend($type, $addr)
    {
        $addr_str = $type . ": ";
        $addr_str .= $this->AddrFormat($addr[0]);
 
        if (count($addr) > 1)
        {
            for ($i = 1; $i < count($addr); $i++)
                $addr_str .= ", " . $this->AddrFormat($addr[$i]);
        }
 
        $addr_str .= $this->LE;
 
        return $addr_str;
    }
 
    function AddrFormat($addr)
    {
        if (empty($addr[1]))
            $formatted = $addr[0];
        else
        {
            $formatted = $this->EncodeHeader($addr[1], 'phrase') . " <" . $addr[0] . ">";
        }
 
        return $formatted;
    }
 
    function WrapText($message, $length, $qp_mode = false)
    {
        $soft_break = ($qp_mode) ? sprintf(" =%s", $this->LE) : $this->LE;
 
        $message = $this->FixEOL($message);
 
        if (substr($message, -1) == $this->LE)
            $message = substr($message, 0, -1);
 
        $line = explode($this->LE, $message);
        $message = "";
 
        for ($i = 0; $i < count($line); $i++)
        {
            $line_part = explode(" ", $line[$i]);
            $buf = "";
 
            for ($e = 0; $e < count($line_part); $e++)
            {
                $word = $line_part[$e];
 
                if ($qp_mode and (strlen($word) > $length))
                {
                    $space_left = $length - strlen($buf) - 1;
 
                    if ($e != 0)
                    {
                        if ($space_left > 20)
                        {
                            $len = $space_left;
 
                            if (substr($word, $len - 1, 1) == "=")
                                $len--;
 
                            elseif (substr($word, $len - 2, 1) == "=")
                                $len -= 2;
 
                            $part = substr($word, 0, $len);
                            $word = substr($word, $len);
                            $buf .= " " . $part;
                            $message .= $buf . sprintf("=%s", $this->LE);
                        }
                        else
                        {
                            $message .= $buf . $soft_break;
                        }
 
                        $buf = "";
                    }
 
                    while (strlen($word) > 0)
                    {
                        $len = $length;
 
                        if (substr($word, $len - 1, 1) == "=")
                            $len--;
 
                        elseif (substr($word, $len - 2, 1) == "=")
                            $len -= 2;
 
                        $part = substr($word, 0, $len);
                        $word = substr($word, $len);
 
                        if (strlen($word) > 0)
                            $message .= $part . sprintf("=%s", $this->LE);
                        else
                            $buf = $part;
                    }
                }
                else
                {
                    $buf_o = $buf;
                    $buf .= ($e == 0) ? $word : (" " . $word);
 
                    if (strlen($buf) > $length and $buf_o != "")
                    {
                        $message .= $buf_o . $soft_break;
                        $buf = $word;
                    }
                }
            }
 
            $message .= $buf . $this->LE;
        }
 
        return $message;
    }
 
    function SetWordWrap()
    {
        if ($this->WordWrap < 1)
            return;
 
        switch ($this->message_type)
            {
            case "alt":
            // fall through
            case "alt_attachment":
                $this->AltBody = $this->WrapText($this->AltBody, $this->WordWrap);
 
                break;
 
            default:
                $this->Body = $this->WrapText($this->Body, $this->WordWrap);
 
                break;
            }
    }
 
    function CreateHeader()
    {
        $result = "";
 
        // Set the boundaries
        $uniq_id = md5(uniqid(time()));
        $this->boundary[1] = "b1_" . $uniq_id;
        $this->boundary[2] = "b2_" . $uniq_id;
 
        $result .= $this->Received();
        $result .= $this->HeaderLine("Date", $this->RFCDate());
 
        if ($this->Sender == "")
            $result .= $this->HeaderLine("Return-Path", trim($this->From));
        else
            $result .= $this->HeaderLine("Return-Path", trim($this->Sender));
 
        // To be created automatically by mail()
        if ($this->Mailer != "mail")
        {
            if (count($this->to) > 0)
                $result .= $this->AddrAppend("To", $this->to);
 
            else if (count($this->cc) == 0)
                $result .= $this->HeaderLine("To", "undisclosed-recipients:;");
 
            if (count($this->cc) > 0)
                $result .= $this->AddrAppend("Cc", $this->cc);
        }
 
        $from = array(
            );
 
        $from[0][0] = trim($this->From);
        $from[0][1] = $this->FromName;
        $result .= $this->AddrAppend("From", $from);
 
        // sendmail and mail() extract Bcc from the header before sending
        if ((($this->Mailer == "sendmail") || ($this->Mailer == "mail")) && (count($this->bcc) > 0))
            $result .= $this->AddrAppend("Bcc", $this->bcc);
 
        if (count($this->ReplyTo) > 0)
            $result .= $this->AddrAppend("Reply-to", $this->ReplyTo);
 
        // mail() sets the subject itself
        if ($this->Mailer != "mail")
            $result .= $this->HeaderLine("Subject", $this->EncodeHeader(trim($this->Subject)));
 
        $result .= sprintf("Message-ID: <%s@%s>%s", $uniq_id, $this->ServerHostname(), $this->LE);
        $result .= $this->HeaderLine("X-Priority", $this->Priority);
        $result .= $this->HeaderLine("X-Mailer", "PHPMailer [version " . $this->Version . "]");
 
        if ($this->ConfirmReadingTo != "")
        {
            $result .= $this->HeaderLine("Disposition-Notification-To", "<" . trim($this->ConfirmReadingTo) . ">");
        }
 
        // Add custom headers
        for ($index = 0; $index < count($this->CustomHeader); $index++)
        {
            $result .= $this->HeaderLine(trim($this->CustomHeader[$index][0]),
                                         $this->EncodeHeader(trim($this->CustomHeader[$index][1])));
        }
 
        $result .= $this->HeaderLine("MIME-Version", "1.0");
 
        switch ($this->message_type)
            {
            case "plain":
                $result .= $this->HeaderLine("Content-Transfer-Encoding", $this->Encoding);
 
                $result .= sprintf("Content-Type: %s; charset=\"%s\"", $this->ContentType, $this->CharSet);
                break;
 
            case "attachments":
            // fall through
            case "alt_attachments":
                if ($this->InlineImageExists())
                {
                    $result .= sprintf("Content-Type: %s;%s\ttype=\"text/html\";%s\tboundary=\"%s\"%s",
                                       "multipart/related",
                                       $this->LE,
                                       $this->LE,
                                       $this->boundary[1],
                                       $this->LE);
                }
                else
                {
                    $result .= $this->HeaderLine("Content-Type", "multipart/mixed;");
                    $result .= $this->TextLine("\tboundary=\"" . $this->boundary[1] . '"');
                }
 
                break;
 
            case "alt":
                $result .= $this->HeaderLine("Content-Type", "multipart/alternative;");
 
                $result .= $this->TextLine("\tboundary=\"" . $this->boundary[1] . '"');
                break;
            }
 
        if ($this->Mailer != "mail")
            $result .= $this->LE . $this->LE;
 
        return $result;
    }
 
    function CreateBody()
    {
        $result = "";
 
        $this->SetWordWrap();
 
        switch ($this->message_type)
            {
            case "alt":
                $result .= $this->GetBoundary($this->boundary[1], "", "text/plain", "");
 
                $result .= $this->EncodeString($this->AltBody, $this->Encoding);
                $result .= $this->LE . $this->LE;
                $result .= $this->GetBoundary($this->boundary[1], "", "text/html", "");
 
                $result .= $this->EncodeString($this->Body, $this->Encoding);
                $result .= $this->LE . $this->LE;
 
                $result .= $this->EndBoundary($this->boundary[1]);
                break;
 
            case "plain":
                $result .= $this->EncodeString($this->Body, $this->Encoding);
 
                break;
 
            case "attachments":
                $result .= $this->GetBoundary($this->boundary[1], "", "", "");
 
                $result .= $this->EncodeString($this->Body, $this->Encoding);
                $result .= $this->LE;
 
                $result .= $this->AttachAll();
                break;
 
            case "alt_attachments":
                $result .= sprintf("--%s%s", $this->boundary[1], $this->LE);
 
                $result .= sprintf("Content-Type: %s;%s" . "\tboundary=\"%s\"%s", "multipart/alternative", $this->LE,
                                   $this->boundary[2],                            $this->LE . $this->LE);
 
                // Create text body
                $result .= $this->GetBoundary($this->boundary[2], "", "text/plain", "") . $this->LE;
 
                $result .= $this->EncodeString($this->AltBody, $this->Encoding);
                $result .= $this->LE . $this->LE;
 
                // Create the HTML body
                $result .= $this->GetBoundary($this->boundary[2], "", "text/html", "") . $this->LE;
 
                $result .= $this->EncodeString($this->Body, $this->Encoding);
                $result .= $this->LE . $this->LE;
 
                $result .= $this->EndBoundary($this->boundary[2]);
 
                $result .= $this->AttachAll();
                break;
            }
 
        if ($this->IsError())
            $result = "";
 
        return $result;
    }
 
    function GetBoundary($boundary, $charSet, $contentType, $encoding)
    {
        $result = "";
 
        if ($charSet == "")
        {
            $charSet = $this->CharSet;
        }
 
        if ($contentType == "")
        {
            $contentType = $this->ContentType;
        }
 
        if ($encoding == "")
        {
            $encoding = $this->Encoding;
        }
 
        $result .= $this->TextLine("--" . $boundary);
        $result .= sprintf("Content-Type: %s; charset = \"%s\"", $contentType, $charSet);
        $result .= $this->LE;
        $result .= $this->HeaderLine("Content-Transfer-Encoding", $encoding);
        $result .= $this->LE;
 
        return $result;
    }
 
    function EndBoundary($boundary)
    {
        return $this->LE . "--" . $boundary . "--" . $this->LE;
    }
 
    function SetMessageType()
    {
        if (count($this->attachment) < 1 && strlen($this->AltBody) < 1)
            $this->message_type = "plain";
        else
        {
            if (count($this->attachment) > 0)
                $this->message_type = "attachments";
 
            if (strlen($this->AltBody) > 0 && count($this->attachment) < 1)
                $this->message_type = "alt";
 
            if (strlen($this->AltBody) > 0 && count($this->attachment) > 0)
                $this->message_type = "alt_attachments";
        }
    }
 
    function HeaderLine($name, $value)
    {
        return $name . ": " . $value . $this->LE;
    }
 
    function TextLine($value)
    {
        return $value . $this->LE;
    }
 
    // ATTACHMENT METHODS
 
    function AddAttachment($path, $name = "", $encoding = "base64", $type = "application/octet-stream")
    {
        if (!@is_file($path))
        {
            $this->SetError($this->Lang("file_access") . $path);
            return false;
        }
 
        $filename = basename($path);
 
        if ($name == "")
            $name = $filename;
 
        $cur = count($this->attachment);
        $this->attachment[$cur][0] = $path;
        $this->attachment[$cur][1] = $filename;
        $this->attachment[$cur][2] = $name;
        $this->attachment[$cur][3] = $encoding;
        $this->attachment[$cur][4] = $type;
        $this->attachment[$cur][5] = false; // isStringAttachment
        $this->attachment[$cur][6] = "attachment";
        $this->attachment[$cur][7] = 0;
 
        return true;
    }
 
    function AttachAll()
    {
        // Return text of body
        $mime = array(
            );
 
        // Add all attachments
        for ($i = 0; $i < count($this->attachment); $i++)
        {
            // Check for string attachment
            $bString = $this->attachment[$i][5];
 
            if ($bString)
                $string = $this->attachment[$i][0];
            else
                $path = $this->attachment[$i][0];
 
            $filename = $this->attachment[$i][1];
            $name = $this->attachment[$i][2];
            $encoding = $this->attachment[$i][3];
            $type = $this->attachment[$i][4];
            $disposition = $this->attachment[$i][6];
            $cid = $this->attachment[$i][7];
 
            $mime[] = sprintf("--%s%s", $this->boundary[1], $this->LE);
            $mime[] = sprintf("Content-Type: %s; name=\"%s\"%s", $type, $name, $this->LE);
            $mime[] = sprintf("Content-Transfer-Encoding: %s%s", $encoding, $this->LE);
 
            if ($disposition == "inline")
                $mime[] = sprintf("Content-ID: <%s>%s", $cid, $this->LE);
 
            $mime[] = sprintf("Content-Disposition: %s; filename=\"%s\"%s", $disposition, $name, $this->LE . $this->LE);
 
            // Encode as string attachment
            if ($bString)
            {
                $mime[] = $this->EncodeString($string, $encoding);
 
                if ($this->IsError())
                {
                    return "";
                }
 
                $mime[] = $this->LE . $this->LE;
            }
            else
            {
                $mime[] = $this->EncodeFile($path, $encoding);
 
                if ($this->IsError())
                {
                    return "";
                }
 
                $mime[] = $this->LE . $this->LE;
            }
        }
 
        $mime[] = sprintf("--%s--%s", $this->boundary[1], $this->LE);
 
        return join("", $mime);
    }
 
    function EncodeFile($path, $encoding = "base64")
    {
        if (!@$fd = fopen($path, "rb"))
        {
            $this->SetError($this->Lang("file_open") . $path);
            return "";
        }
 
        $file_buffer = fread($fd, filesize($path));
        $file_buffer = $this->EncodeString($file_buffer, $encoding);
        fclose ($fd);
 
        return $file_buffer;
    }
 
    function EncodeString($str, $encoding = "base64")
    {
        $encoded = "";
 
        switch (strtolower($encoding))
            {
            case "base64":
                // chunk_split is found in PHP >= 3.0.6
                $encoded = chunk_split(base64_encode($str), 76, $this->LE);
 
                break;
 
            case "7bit":
            case "8bit":
                $encoded = $this->FixEOL($str);
 
                if (substr($encoded, -(strlen($this->LE))) != $this->LE)
                    $encoded .= $this->LE;
 
                break;
 
            case "binary":
                $encoded = $str;
 
                break;
 
            case "quoted-printable":
                $encoded = $this->EncodeQP($str);
 
                break;
 
            default:
                $this->SetError($this->Lang("encoding") . $encoding);
 
                break;
            }
 
        return $encoded;
    }
 
    function EncodeHeader($str, $position = 'text')
    {
        $x = 0;
 
        switch (strtolower($position))
            {
            case 'phrase':
                if (!preg_match('/[\200-\377]/', $str))
                {
                    // Can't use addslashes as we don't know what value has magic_quotes_sybase.
                    $encoded = addcslashes($str, "\0..\37\177\\\"");
 
                    if (($str == $encoded) && !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str))
                        return ($encoded);
                    else
                        return ("\"$encoded\"");
                }
 
                $x = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);
                break;
 
            case 'comment': $x = preg_match_all('/[()"]/', $str, $matches);
 
            // Fall-through
            case 'text':
            default:
                $x += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
 
                break;
            }
 
        if ($x == 0)
            return ($str);
 
        $maxlen = 75 - 7 - strlen($this->CharSet);
 
        // Try to select the encoding which should produce the shortest output
        if (strlen($str) / 3 < $x)
        {
            $encoding = 'B';
            $encoded = base64_encode($str);
            $maxlen -= $maxlen % 4;
            $encoded = trim(chunk_split($encoded, $maxlen, "\n"));
        }
        else
        {
            $encoding = 'Q';
            $encoded = $this->EncodeQ($str, $position);
            $encoded = $this->WrapText($encoded, $maxlen, true);
            $encoded = str_replace("=" . $this->LE, "\n", trim($encoded));
        }
 
        $encoded = preg_replace('/^(.*)$/m', " =?" . $this->CharSet . "?$encoding?\\1?=", $encoded);
        $encoded = trim(str_replace("\n", $this->LE, $encoded));
 
        return $encoded;
    }
 
    function EncodeQP($str)
    {
        $encoded = $this->FixEOL($str);
 
        if (substr($encoded, -(strlen($this->LE))) != $this->LE)
            $encoded .= $this->LE;
 
        // Replace every high ascii, control and = characters
        $encoded = preg_replace('/([\000-\010\013\014\016-\037\075\177-\377])/', "'='.sprintf('%02X', ord('\\1'))",
                                $encoded);
        // Replace every spaces and tabs when it's the last character on a line
        $encoded = preg_replace("/([\011\040])" . $this->LE . "/",
                                "'='.sprintf('%02X', ord('\\1')).'" . $this->LE . "'",
                                $encoded);
 
        // Maximum line length of 76 characters before CRLF (74 + space + '=')
        $encoded = $this->WrapText($encoded, 74, true);
 
        return $encoded;
    }
 
    function EncodeQ($str, $position = "text")
    {
        // There should not be any EOL in the string
        $encoded = preg_replace("[\r\n]", "", $str);
 
        switch (strtolower($position))
            {
            case "phrase":
                $encoded = preg_replace("/([^A-Za-z0-9!*+\/ -])/", "'='.sprintf('%02X', ord('\\1'))", $encoded);
 
                break;
 
            case "comment": $encoded = preg_replace("/([\‍(\‍)\"])/", "'='.sprintf('%02X', ord('\\1'))", $encoded);
 
            case "text":
            default:
                // Replace every high ascii, control =, ? and _ characters
                $encoded = preg_replace('/([\000-\011\013\014\016-\037\075\077\137\177-\377])/',
                                        "'='.sprintf('%02X', ord('\\1'))",
                                        $encoded);
 
                break;
            }
 
        // Replace every spaces to _ (more readable than =20)
        $encoded = str_replace(" ", "_", $encoded);
 
        return $encoded;
    }
 
    function AddStringAttachment($string, $filename, $encoding = "base64", $type = "application/octet-stream")
    {
        // Append to $attachment array
        $cur = count($this->attachment);
        $this->attachment[$cur][0] = $string;
        $this->attachment[$cur][1] = $filename;
        $this->attachment[$cur][2] = $filename;
        $this->attachment[$cur][3] = $encoding;
        $this->attachment[$cur][4] = $type;
        $this->attachment[$cur][5] = true; // isString
        $this->attachment[$cur][6] = "attachment";
        $this->attachment[$cur][7] = 0;
    }
 
    function AddEmbeddedImage($path, $cid, $name = "", $encoding = "base64", $type = "application/octet-stream")
    {
        if (!@is_file($path))
        {
            $this->SetError($this->Lang("file_access") . $path);
            return false;
        }
 
        $filename = basename($path);
 
        if ($name == "")
            $name = $filename;
 
        // Append to $attachment array
        $cur = count($this->attachment);
        $this->attachment[$cur][0] = $path;
        $this->attachment[$cur][1] = $filename;
        $this->attachment[$cur][2] = $name;
        $this->attachment[$cur][3] = $encoding;
        $this->attachment[$cur][4] = $type;
        $this->attachment[$cur][5] = false; // isStringAttachment
        $this->attachment[$cur][6] = "inline";
        $this->attachment[$cur][7] = $cid;
 
        return true;
    }
 
    function InlineImageExists()
    {
        $result = false;
 
        for ($i = 0; $i < count($this->attachment); $i++)
        {
            if ($this->attachment[$i][6] == "inline")
            {
                $result = true;
                break;
            }
        }
 
        return $result;
    }
 
    // MESSAGE RESET METHODS
 
    function ClearAddresses()
    {
        $this->to = array(
            );
    }
 
    function ClearCCs()
    {
        $this->cc = array(
            );
    }
 
    function ClearBCCs()
    {
        $this->bcc = array(
            );
    }
 
    function ClearReplyTos()
    {
        $this->ReplyTo = array(
            );
    }
 
    function ClearAllRecipients()
    {
        $this->to = array(
            );
 
        $this->cc = array(
            );
 
        $this->bcc = array(
            );
    }
 
    function ClearAttachments()
    {
        $this->attachment = array(
            );
    }
 
    function ClearCustomHeaders()
    {
        $this->CustomHeader = array(
            );
    }
 
    // MISCELLANEOUS METHODS
 
    function SetError($msg)
    {
        $this->error_count++;
        $this->ErrorInfo = $msg;
    }
 
    function RFCDate()
    {
        $tz = date("Z");
        $tzs = ($tz < 0) ? "-" : "+";
        $tz = abs($tz);
        $tz = ($tz / 3600) * 100 + ($tz % 3600) / 60;
        $result = sprintf("%s %s%04d", date("D, j M Y H:i:s"), $tzs, $tz);
 
        return $result;
    }
 
    function Received()
    {
        if ($this->ServerVar('SERVER_NAME') != '')
        {
            $protocol = ($this->ServerVar('HTTPS') == 'on') ? 'HTTPS' : 'HTTP';
            $remote = $this->ServerVar('REMOTE_HOST');
 
            if ($remote == "")
                $remote = 'phpmailer';
 
            $remote .= ' ([' . $this->ServerVar('REMOTE_ADDR') . '])';
        }
        else
        {
            $protocol = 'local';
            $remote = $this->ServerVar('USER');
 
            if ($remote == '')
                $remote = 'phpmailer';
        }
 
        $result = sprintf("Received: from %s %s\tby %s " . "with %s (PHPMailer);%s\t%s%s", $remote,   $this->LE,
                          $this->ServerHostname(),                                         $protocol, $this->LE,
                          $this->RFCDate(),                                                $this->LE);
 
        return $result;
    }
 
    function ServerVar($varName)
    {
        global $HTTP_SERVER_VARS;
        global $HTTP_ENV_VARS;
 
        if (!isset($_SERVER))
        {
            $_SERVER = $HTTP_SERVER_VARS;
 
            if (!isset($_SERVER["REMOTE_ADDR"]))
                $_SERVER = $HTTP_ENV_VARS; // must be Apache
        }
 
        if (isset($_SERVER[$varName]))
            return $_SERVER[$varName];
        else
            return "";
    }
 
    function ServerHostname()
    {
        if ($this->Hostname != "")
            $result = $this->Hostname;
 
        elseif ($this->ServerVar('SERVER_NAME') != "")
            $result = $this->ServerVar('SERVER_NAME');
 
        else
            $result = "localhost.localdomain";
 
        return $result;
    }
 
    function Lang($key)
    {
        if (count($this->language) < 1)
            $this->SetLanguage("en"); // set the default language
 
        if (isset($this->language[$key]))
            return $this->language[$key];
        else
            return "Language string failed to load: " . $key;
    }
 
    function IsError()
    {
        return ($this->error_count > 0);
    }
 
    function FixEOL($str)
    {
        $str = str_replace("\r\n", "\n", $str);
        $str = str_replace("\r", "\n", $str);
        $str = str_replace("\n", $this->LE, $str);
        return $str;
    }
 
    function AddCustomHeader($custom_header)
    {
        $this->CustomHeader[] = explode(":", $custom_header, 2);
    }
}
?>