// 存成 "mime_mail.inc" 檔案

class mime_mail {

var $parts;

var $to;

var $from;

var $headers;

var $subject;

var $body;

/*

* void mime_mail()

* 類別建構者

*/

function mime_mail() {

$this->parts = array();

$this->to = "";

$this->from = "";

$this->subject = "";

$this->body = "";

$this->headers = "";

}

/*

* void add_attachment(string message,

* [string name],

* [string ctype])

* 將附加物（附檔）加入郵件物件

*/

function add_attachment($message, $name = "",

$ctype = "application/octet-stream") {

$this->parts[] = array( "ctype" => $ctype,

"message" => $message,

"encode" => $encode,

"name" => $name);

}

/*

* void build_message(array part)

* 建立 multipart 郵件的訊息部份

*/

function build_message($part) {

$message = $part["message"];

$message = chunk_split(base64_encode($message));

$encoding = "base64";

return "Content-Type: " . $part["ctype"] .

($part["name"] ? "; name=\"".$part["name"]."\"" : "") .

"\nContent-Transfer-Encoding: $encoding\n\n$message\n";

}

/*

* void build_multipart()

* 建立一封 multipart 郵件

*/

function build_multipart() {

$boundary = "b" . md5(uniqid(time()));

$multipart = "Content-Type: multipart/mixed; " .

"boundary = $boundary\n\n" .

"This is a MIME encoded message.\n\n--$boundary";

for ($i = sizeof($this->parts) - 1; $i >= 0; $i--) {

$multipart .= "\n" . $this->build_message($this->parts[$i]) . "--$boundary";

}

return $multipart . "--\n";

}

/*

* string get_mail()

* 傳回已組合完成的郵件

*/

function get_mail($complete = true) {

$mime = "";

if (!empty($this->from))

$mime .= "From: " . $this->from . "\n";

if (!empty($this->headers))

$mime .= $this->headers . "\n";

if ($complete) {

if (!empty($this->to))

$mime .= "To: $this->to\n";

if (!empty($this->subject))

$mime .= "Subject: $this->subject\n";

}

if (!empty($this->body))

$this->add_attachment($this->body, "", "text/plain");

$mime .= "MIME-Version: 1.0\n" . $this->build_multipart();

return $mime;

}

/*

* void send()

* 寄出這封信（最後一個被呼叫的函式）

*/

function send() {

$mime = $this->get_mail(false);

mail($this->to, $this->subject, "", $mime);

}

} // 類別結束

?>