PHP教程.应用实例--9

php写的发送附件的程序(二)
<?php
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(!is_array($this->html_images)){
$this->multipart.= "--".$orig_boundary." ";
$this->multipart.= "Content-Type: multipart/alternative; boundary="".$sec_boundary."" ";

$this->multipart.= "--".$sec_boundary." ";
$this->multipart.= "Content-Type: text/plain"." ";
$this->multipart.= "Content-Transfer-Encoding: 7bit"." ";
$this->multipart.= $this->html_text." ";

$this->multipart.= "--".$sec_boundary." ";
$this->multipart.= "Content-Type: text/html"." ";
$this->multipart.= "Content-Transfer-Encoding: 7bit"." ";
$this->multipart.= $this->html." ";
$this->multipart.= "--".$sec_boundary."-- ";
}else{
$this->multipart.= "--".$orig_boundary." ";
$this->multipart.= "Content-Type: multipart/related; boundary="".$sec_boundary."" ";

$this->multipart.= "--".$sec_boundary." ";
$this->multipart.= "Content-Type: multipart/alternative; boundary="".$thr_boundary."" ";

$this->multipart.= "--".$thr_boundary." ";
$this->multipart.= "Content-Type: text/plain"." ";
$this->multipart.= "Content-Transfer-Encoding: 7bit"." ";
$this->multipart.= $this->html_text." ";

$this->multipart.= "--".$thr_boundary." ";
$this->multipart.= "Content-Type: text/html"." ";
$this->multipart.= "Content-Transfer-Encoding: 7bit"." ";
$this->multipart.= $this->html." ";
$this->multipart.= "--".$thr_boundary."-- ";

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

$this->multipart.= "--".$sec_boundary."-- ";
}
}
/***************************************
** 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"]."" ";
else $this->multipart .= " ";

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

/***************************************
** 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"]."" ";
else
$message_part .= " ";

// Determine content encoding.
if($this->parts[$i]["c_type"] == "text/plain"){
$message_part.= "Content-Transfer-Encoding: 7bit"." ";
$message_part.= $this->parts[$i]["body"]." ";
}else{
$message_part.= "Content-Transfer-Encoding: base64"." ";
$message_part.= "Content-Disposition: attachment; filename="".$this->parts[$i]["name"]."" ";
$message_part.= chunk_split(base64_encode($this->parts[$i]["body"]))." ";
}

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 ";
$this->headers.= "Content-Type: multipart/mixed; boundary="".$boundary."" ";
$this->multipart = "";
$this->multipart.= "This is a MIME encoded message. Created by html_mime_mail.class. See http://www.heyes-computing.net/scripts/ for a copy. ";

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." ".$this->build_part($i);
}

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

/***************************************
** 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;
$this->headers.= "From: ".$from." ";
//$this->headers.= $headers;
mail($to, $subject, $this->mime, $this->headers);
}

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

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

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

} // End of class.
?>