Mime Email Class

[Dillion & Amanda 4 Lif]

Found it while searching the PHPBuilder Code Library. Seems more useful than the original PHP mail(). May solve problems sending to Hotmail that doesnt like php mail() alot. All the copyright details are in the script.
<?php
/***************************************
** Title.........: HTML Mime Mail class
** Version.......: 1.26
** Author........: Richard Heyes <[email protected]>
** Filename......: html_mime_mail.class
** Last changed..: 25/06/2000
** Notes.........: Based upon mime_mail.class
**                 by Tobias Ratschiller <[email protected]>
**                 and Sascha Schumann <[email protected]>.
**                  - Thanks to Thomas Flemming for supplying a fix
**                    for Win32.
**                  - Made headers terminated by CRLF instead of LF, now
**                    compliant with RFC822. Thanks to Pao-Hsi Huang.
**                  - Fixed bug; certain mail systems (gmx.net in particular)
**                    were rejecting mail because of a space character either
**                    side of the equal sign on the boundary line. Thanks to
**                    Peter Holm for notifying me.
**                  - Fixed bug; $html_images was tested to be an array or not
**                    but was set to be an array during object creation, so the
**                    test always returned true. Thanks to Bob Silva for
**                    notifying me.
**                  - Fixed bug; when looping with $obj->send(), From: headers
**                    were accumulating. Bummer. Thanks to Lance Rasmussen for
**                    notifying me.
**                  - See [url]http://www.heyes-computing.net/scripts/[/url] for a zip/tar
**                    containing an example script.
***************************************/

class html_mime_mail{

       var $headers;
       var $body;
       var $multipart;
       var $mime;
       var $html;
       var $html_text;
       var $html_images = array();
       var $cids = array();
       var $do_html;
       var $parts = array();

/***************************************
** Constructor function. Sets the headers
** if supplied.
***************************************/
       function html_mime_mail($headers = ''){
               $this->headers = $headers;
       }

/***************************************
** Adds a html part to the mail.
** Also replaces image names with
** content-id's.
***************************************/
       function add_html($html, $text){
               $this->do_html = 1;
               $this->html = $html;
               $this->html_text = $text;
               if(is_array($this->html_images) AND count($this->html_images) > 0){
                       for($i=0; $i<count($this->html_images); $i++){
                               $this->html = ereg_replace($this->html_images[$i]['name'], 'cid:'.$this->html_images[$i]['cid'], $this->html);
                       }
               }
       }

/***************************************
** Builds html part of email.
***************************************/
       function build_html($orig_boundary){
               $sec_boundary = '=_'.md5(uniqid(time()));
               $thr_boundary = '=_'.md5(uniqid(time()));

               if(count($this->html_images) == 0){
                       $this->multipart.= '--'.$orig_boundary."\r\n";
                       $this->multipart.= 'Content-Type: multipart/alternative;'.chr(13).chr(10).chr(9).'boundary="'.$sec_boundary."\"\r\n\r\n\r\n";

                       $this->multipart.= '--'.$sec_boundary."\r\n";
                       $this->multipart.= 'Content-Type: text/plain'."\r\n";
                       $this->multipart.= 'Content-Transfer-Encoding: base64'."\r\n\r\n";
                       $this->multipart.= chunk_split(base64_encode($this->html_text))."\r\n\r\n";

                       $this->multipart.= '--'.$sec_boundary."\r\n";
                       $this->multipart.= 'Content-Type: text/html'."\r\n";
                       $this->multipart.= 'Content-Transfer-Encoding: base64'."\r\n\r\n";
                       $this->multipart.= chunk_split(base64_encode($this->html))."\r\n\r\n";
                       $this->multipart.= '--'.$sec_boundary."--\r\n\r\n";
               }else{
                       $this->multipart.= '--'.$orig_boundary."\r\n";
                       $this->multipart.= 'Content-Type: multipart/related;'.chr(13).chr(10).chr(9).'boundary="'.$sec_boundary."\"\r\n\r\n\r\n";

                       $this->multipart.= '--'.$sec_boundary."\r\n";
                       $this->multipart.= 'Content-Type: multipart/alternative;'.chr(13).chr(10).chr(9).'boundary="'.$thr_boundary."\"\r\n\r\n\r\n";

                       $this->multipart.= '--'.$thr_boundary."\r\n";
                       $this->multipart.= 'Content-Type: text/plain'."\r\n";
                       $this->multipart.= 'Content-Transfer-Encoding: base64'."\r\n\r\n";
                       $this->multipart.= chunk_split(base64_encode($this->html_text))."\r\n\r\n";

                       $this->multipart.= '--'.$thr_boundary."\r\n";
                       $this->multipart.= 'Content-Type: text/html'."\r\n";
                       $this->multipart.= 'Content-Transfer-Encoding: base64'."\r\n\r\n";
                       $this->multipart.= chunk_split(base64_encode($this->html))."\r\n\r\n";
                       $this->multipart.= '--'.$thr_boundary."--\r\n\r\n";

                       for($i=0; $i<count($this->html_images); $i++){
                               $this->multipart.= '--'.$sec_boundary."\r\n";
                               $this->build_html_image($i);
                       }

                       $this->multipart.= "--".$sec_boundary."--\r\n\r\n";
               }
       }
/***************************************
** Adds an image to the list of embedded
** images.
***************************************/
       function add_html_image($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 add_attachment($file, $name = '', $c_type='application/octet-stream'){
               $this->parts[] = array( 'body' => $file,
                                       'name' => $name,
                                       'c_type' => $c_type );
       }

/***************************************
** Builds an embedded image part of an
** html mail.
***************************************/
       function build_html_image($i){
               $this->multipart.= 'Content-Type: '.$this->html_images[$i]['c_type'];

               if($this->html_images[$i]['name'] != '') $this->multipart .= '; name="'.$this->html_images[$i]['name']."\"\r\n";
               else $this->multipart .= "\r\n";

               $this->multipart.= 'Content-Transfer-Encoding: base64'."\r\n";
               $this->multipart.= 'Content-ID: <'.$this->html_images[$i]['cid'].">\r\n\r\n";
               $this->multipart.= chunk_split(base64_encode($this->html_images[$i]['body']))."\r\n";
       }

/***************************************
** Builds a single part of a multipart
** message.
***************************************/
       function build_part($i){
               $message_part = '';
               $message_part.= 'Content-Type: '.$this->parts[$i]['c_type'];
               if($this->parts[$i]['name'] != '')
                       $message_part .= '; name="'.$this->parts[$i]['name']."\"\r\n";
               else
                       $message_part .= "\r\n";

               // Determine content encoding.
               if($this->parts[$i]['c_type'] == 'text/plain'){
                       $message_part.= 'Content-Transfer-Encoding: base64'."\r\n\r\n";
                       $message_part.= chunk_split(base64_encode($this->parts[$i]['body']))."\r\n";
               }else{
                       $message_part.= 'Content-Transfer-Encoding: base64'."\r\n";
                       $message_part.= 'Content-Disposition: attachment; filename="'.$this->parts[$i]['name']."\"\r\n\r\n";
                       $message_part.= chunk_split(base64_encode($this->parts[$i]['body']))."\r\n";
               }

               return $message_part;
       }

/***************************************
** Builds the multipart message from the
** list ($this->parts).
***************************************/
       function build_message(){
               $boundary = '=_'.md5(uniqid(time()));

               $this->headers.= "MIME-Version: 1.0\r\n";
               $this->headers.= "Content-Type: multipart/mixed;".chr(13).chr(10).chr(9)."boundary=\"".$boundary."\"\r\n";
               $this->multipart = '';
               $this->multipart.= "This is a MIME encoded message.\r\nCreated by html_mime_mail.class.\r\nSee [url]http://www.heyes-computing.net/scripts/[/url] for a copy.\r\n\r\n";

               if(isset($this->do_html) AND $this->do_html == 1) $this->build_html($boundary);
               if(isset($this->body) AND $this->body != '') $this->parts[] = array('body' => $this->body, 'name' => '', 'c_type' => 'text/plain');

               for($i=(count($this->parts)-1); $i>=0; $i--){
                       $this->multipart.= '--'.$boundary."\r\n".$this->build_part($i);
               }

               $this->mime = $this->multipart."--".$boundary."--\r\n";
       }

/***************************************
** Sends the mail.
***************************************/
       function send($to_name, $to_addr, $from_name, $from_addr, $subject = '', $headers = ''){

               if($to_name != '') $to = '"'.$to_name.'" <'.$to_addr.'>';
               else $to = $to_addr;

               if($from_name != '') $from = '"'.$from_name.'" <'.$from_addr.'>';
               else $from = $from_addr;

               mail($to, $subject, $this->mime, 'From: '.$from."\r\n".$this->headers);
       }

/***************************************
** Use this method to deliver using direct
** smtp connection. Relies upon Manuel Lemos'
** smtp mail delivery class available at:
** [url]http://phpclasses.upperdesign.com[/url]
**
** void smtp_send( string *Name* of smtp object,
**                 string From address,
**                 array  To addresses,
**                 string Subject)
***************************************/
       function smtp_send($smtp_obj, $from_addr, $to_addr, $subject){
               global $$smtp_obj;
               $smtp_obj = $$smtp_obj;

               $this->headers .= 'From: '.$from_addr."\r\n";
               $this->headers .= 'Subject: '.$subject."\r\n";

               if(substr($this->headers, -2) == "\r\n") $this->headers = substr($this->headers,0,-2);
               $this->headers = explode("\r\n", $this->headers);

               $smtp_obj->sendmessage($from_addr, $to_addr, $this->headers, $this->mime);
       }

} // End of class.
?>