php 邮件发送程序代码（支持附件)(1/2)

$smtps教程erver = "smtp.126.com";//smtp服务器
$smtpserverport =25;//smtp服务器端口
$smtpusermail = "smiley_face@126.com";//smtp服务器的用户邮箱
$smtpuser = "smiley_face";//smtp服务器的用户帐号
$smtppass = "smileyface1224";//smtp服务器的用户密码，即邮箱密码
$mailtype = "html";//邮件格式（html/txt）,txt为文本邮件

$smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);//true表示使用身份验证,否则不使用身份验证.
$smtp->debug = false;//是否显示发送的调试信息

//common/email.class.php 代码如下
header("content-type: text/html; charset=utf-8");
class smtp
{
/* public variables */
var $smtp_port;
var $time_out;
var $host_name;
var $log_file;
var $relay_host;
var $debug;
var $auth;
var $user;
var $pass;

/* private variables */
var $sock;

/* constractor */
function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)
{
$this->debug = false;
$this->smtp_port = $smtp_port;
$this->relay_host = $relay_host;
$this->time_out = 30; //is used in fsockopen()
#
$this->auth = $auth;//auth
$this->user = $user;
$this->pass = $pass;
#
$this->host_name = "localhost"; //is used in helo command, localhost
$this->log_file ="";

$this->sock = false;
}

/* main function */
function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
{
$mail_from = $this->get_address($this->strip_comment($from));
$body = preg_replace("/(^|( ))(\.)/", "\1.\3", $body);
$header .= "mime-version:1.0 ";
if($mailtype=="html"){
$header .= "content-type:text/html ";
}
$header .= "to: ".$to." ";
if ($cc != "") {
$header .= "cc: ".$cc." ";
}
$header .= "from: $from<".$from."> ";
$header .= "subject: ".$subject." ";
$header .= $additional_headers;
$header .= "date: ".date("r")." ";
$header .= "x-mailer:by redhat (php/".phpversion().") ";
list($msec, $sec) = explode(" ", microtime());
$header .= "message-id: <".date("ymdhis", $sec).".".($msec*1000000).".".$mail_from."> ";
$to = explode(",", $this->strip_comment($to));

if ($cc != "") {
$to = array_merge($to, explode(",", $this->strip_comment($cc)));
}

if ($bcc != "") {
$to = array_merge($to, explode(",", $this->strip_comment($bcc)));
}

$sent = true;
foreach ($to as $rcpt_to) {
$rcpt_to = $this->get_address($rcpt_to);
if (!$this->smtp_sockopen($rcpt_to)) {
$this->log_write("error: cannot send email to ".$rcpt_to." ");
$sent = false;
continue;
}
if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
$this->log_write("e-mail has been sent to <".$rcpt_to."> ");
} else {
$this->log_write("error: cannot send email to <".$rcpt_to."> ");
$sent = false;
}
fclose($this->sock);
$this->log_write("disconnected from remote host ");
}
echo "<br>";
echo $header;
return $sent;
}

/* private functions */

function smtp_send($helo, $from, $to, $header, $body = "")
{
if (!$this->smtp_putcmd("helo", $helo)) {
return $this->smtp_error("sending helo command");
}
#auth
if($this->auth){
if (!$this->smtp_putcmd("auth login", base64_encode($this->user))) {
return $this->smtp_error("sending helo command");
}

if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
return $this->smtp_error("sending helo command");
}
}
#
if (!$this->smtp_putcmd("mail", "from:<".$from.">")) {
return $this->smtp_error("sending mail from command");
}

if (!$this->smtp_putcmd("rcpt", "to:<".$to.">")) {
return $this->smtp_error("sending rcpt to command");
}

if (!$this->smtp_putcmd("data")) {
return $this->smtp_error("sending data command");
}

if (!$this->smtp_message($header, $body)) {
return $this->smtp_error("sending message");
}

if (!$this->smtp_eom()) {
return $this->smtp_error("sending <cr><lf>.<cr><lf> [eom]");
}

if (!$this->smtp_putcmd("quit")) {
return $this->smtp_error("sending quit command");
}

return true;
}

function smtp_sockopen($address)
{
if ($this->relay_host == "") {
return $this->smtp_sockopen_mx($address);
} else {
return $this->smtp_sockopen_relay();
}
}

function smtp_sockopen_relay()
{
$this->log_write("trying to ".$this->relay_host.":".$this->smtp_port." ");
$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
if (!($this->sock && $this->smtp_ok())) {
$this->log_write("error: cannot connenct to relay host ".$this->relay_host." ");
$this->log_write("error: ".$errstr." (".$errno.") ");
return false;
}
$this->log_write("connected to relay host ".$this->relay_host." ");
return true;;
}

function smtp_sockopen_mx($address)
{
$domain = ereg_replace("^.+@([^@]+)$", "\1", $address);
if (!@getmxrr($domain, $mxhosts)) {
$this->log_write("error: cannot resolve mx "".$domain."" ");
return false;
}
foreach ($mxhosts as $host) {
$this->log_write("trying to ".$host.":".$this->smtp_port." ");
$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
if (!($this->sock && $this->smtp_ok())) {
$this->log_write("warning: cannot connect to mx host ".$host." ");
$this->log_write("error: ".$errstr." (".$errno.") ");
continue;
}
$this->log_write("connected to mx host ".$host." ");
return true;
}
$this->log_write("error: cannot connect to any mx hosts (".implode(", ", $mxhosts).") ");
return false;
}

function smtp_message($header, $body)
{
fputs($this->sock, $header." ".$body);
$this->smtp_debug("> ".str_replace(" ", " "."> ", $header." > ".$body." > "));

return true;
}

function smtp_eom()
{
fputs($this->sock, " . ");
$this->smtp_debug(". [eom] ");

return $this->smtp_ok();
}

function smtp_ok()
{
$response = str_replace(" ", "", fgets($this->sock, 512));
$this->smtp_debug($response." ");

if (!preg_match("/^[23]/", $response)) {
fputs($this->sock, "quit ");
fgets($this->sock, 512);
$this->log_write("error: remote host returned "".$response."" ");
return false;
}
return true;
}