本文实例讲述了PHP使用SMTP邮件服务器发送邮件。分享给大家供大家参考，具体如下：
用之前记得先去163注册一个邮箱，然后打开SMTP服务，当然也可以使用QQ邮箱等，但配置信息得改。
如图所示，开启QQ邮箱SMTP服务：
话不多说，直接上代码
email.class.php 定义发送邮件的库
<?php
class smtp
{
/* Public Variables */
var $smtp_port; //smtp_port 端口号
var $time_out;
var $host_name; //服务器主机名
var $log_file;
var $relay_host; //服务器主机地址
var $debug;
var $auth; //验证
var $user; //服务器用户名
var $pass; //服务器密码
/* Private Variables */
var $sock;
/* Constractor 构造方法*/
function smtp($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
// $this->host_name = \"smtp.163.com\"; //is used in HELO command
$this->log_file = \"\";
$this->sock = FALSE;
}
/* Main Function */
function sendmail($to, $from, $subject = \"\", $body = \"\", $mailtype, $cc = \"\", $bcc = \"\", $additional_headers = \"\")
{
$header = \"\";
$mail_from = $this->get_address($this->strip_comment($from));
$body = mb_ereg_replace(\"(^|(\\r\\n))(\\\\.)\", \"\\\\1.\\\\3\", $body);
$header .= \"MIME-Version:1.0\\r\\n\";
if ($mailtype == \"HTML\") { //邮件发送类型
//$header .= \"Content-Type:text/html\\r\\n\";
$header .= \'Content-type: text/html; charset=utf-8\' . \"\\r\\n\";
}
$header .= \"To: \" . $to . \"\\r\\n\";
if ($cc != \"\") {
$header .= \"Cc: \" . $cc . \"\\r\\n\";
}
$header .= \"From: \" . $from . \"\\r\\n\";
// $header .= \"From: $from<\".$from.\">\\r\\n\"; //这里只显示邮箱地址，不够人性化
$header .= \"Subject: \" . $subject . \"\\r\\n\";
$header .= $additional_headers;
$header .= \"Date: \" . date(\"r\") . \"\\r\\n\";
$header .= \"X-Mailer:By (PHP/\" . phpversion() . \")\\r\\n\";
list($msec, $sec) = explode(\" \", microtime());
$header .= \"Message-ID: <\" . date(\"YmdHis\", $sec) . \".\" . ($msec * 1000000) . \".\" . $mail_from . \">\\r\\n\";
$TO = explode(\",\", $this->strip_comment($to));
if ($cc != \"\") {
$TO = array_merge($TO, explode(\",\", $this->strip_comment($cc))); //合并一个或多个数组
}
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 . \"\\n\");
$sent = FALSE;
continue;
}
if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
$this->log_write(\"E-mail has been sent to <\" . $rcpt_to . \">\\n\");
} else {
$this->log_write(\"Error: Cannot send email to <\" . $rcpt_to . \">\\n\");
$sent = FALSE;
}
fclose($this->sock);
$this->log_write(\"Disconnected from remote host\\n\");
}
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 . \"\\n\");
$this->sock = @fsockopen($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 . \"\\n\");
$this->log_write(\"Error: \" . $errstr . \" (\" . $errno . \")\\n\");
return FALSE;
}
$this->log_write(\"Connected to relay host \" . $this->relay_host . \"\\n\");
return TRUE;
;
}
function smtp_sockopen_mx($address)
{
$domain = ereg_replace(\"^.+@([^@]+)$\", \"\\\\1\", $address);
if (!@getmxrr($domain, $MXHOSTS)) {
$this->log_write(\"Error: Cannot resolve MX \\\"\" . $domain . \"\\\"\\n\");
return FALSE;
}
foreach ($MXHOSTS as $host) {
$this->log_write(\"Trying to \" . $host . \":\" . $this->smtp_port . \"\\n\");
$this->sock = @fsockopen($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 . \"\\n\");
$this->log_write(\"Error: \" . $errstr . \" (\" . $errno . \")\\n\");
continue;
}
$this->log_write(\"Connected to mx host \" . $host . \"\\n\");
return TRUE;
}
$this->log_write(\"Error: Cannot connect to any mx hosts (\" . implode(\", \", $MXHOSTS) . \")\\n\");
return FALSE;
}
function smtp_message($header, $body)
{
fputs($this->sock, $header . \"\\r\\n\" . $body);
$this->smtp_debug(\"> \" . str_replace(\"\\r\\n\", \"\\n\" . \"> \", $header . \"\\n> \" . $body . \"\\n> \"));
return TRUE;
}
function smtp_eom()
{
fputs($this->sock, \"\\r\\n.\\r\\n\");
$this->smtp_debug(\". [EOM]\\n\");
return $this->smtp_ok();
}
function smtp_ok()
{
$response = str_replace(\"\\r\\n\", \"\", fgets($this->sock, 512));
$this->smtp_debug($response . \"\\n\");
if (!mb_ereg(\"^[23]\", $response)) {
fputs($this->sock, \"QUIT\\r\\n\");
fgets($this->sock, 512);
$this->log_write(\"Error: Remote host returned \\\"\" . $response . \"\\\"\\n\");
return FALSE;
}
return TRUE;
}
function smtp_putcmd($cmd, $arg = \"\")
{
if ($arg != \"\") {
if ($cmd == \"\")
$cmd = $arg;
else
$cmd = $cmd . \" \" . $arg;
}
fputs($this->sock, $cmd . \"\\r\\n\");
$this->smtp_debug(\"> \" . $cmd . \"\\n\");
return $this->smtp_ok();
}
function smtp_error($string)
{
$this->log_write(\"Error: Error occurred while \" . $string . \".\\n\");
return FALSE;
}
function log_write($message)
{
$this->smtp_debug($message);
if ($this->log_file == \"\") {
return TRUE;
}
$message = date(\"M d H:i:s \") . get_current_user() . \"[\" . getmypid() . \"]: \" . $message;
if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, \"a\"))) {
$this->smtp_debug(\"Warning: Cannot open log file \\\"\" . $this->log_file . \"\\\"\\n\");
return FALSE;
}
flock($fp, LOCK_EX);
fputs($fp, $message);
fclose($fp);
return TRUE;
}
function strip_comment($address)
{
$comment = \"\\\\([^()]*\\\\)\";
while (mb_ereg($comment, $address)) {
$address = mb_ereg_replace($comment, \"\", $address);
}
return $address;
}
function get_address($address)
{
$address = mb_ereg_replace(\"([ \\t\\r\\n])+\", \"\", $address);
$address = mb_ereg_replace(\"^.*<(.+)>.*$\", \"\\\\1\", $address);
return $address;
}
function smtp_debug($message)
{
if ($this->debug) {
echo $message . \"<br>\";
}
}
function get_attach_type($image_tag) //
{
$filedata = array();
$img_file_con = fopen($image_tag, \"r\");
unset($image_data);
while ($tem_buffer = AddSlashes(fread($img_file_con, filesize($image_tag))))
$image_data .= $tem_buffer;
fclose($img_file_con);
$filedata[\'context\'] = $image_data;
$filedata[\'filename\'] = basename($image_tag);
$extension = substr($image_tag, strrpos($image_tag, \".\"), strlen($image_tag) - strrpos($image_tag, \".\"));
switch ($extension) {
case \".gif\":
$filedata[\'type\'] = \"image/gif\";
break;
case \".gz\":
$filedata[\'type\'] = \"application/x-gzip\";
break;
case \".htm\":
$filedata[\'type\'] = \"text/html\";
break;
case \".html\":
$filedata[\'type\'] = \"text/html\";
break;
case \".jpg\":
$filedata[\'type\'] = \"image/jpeg\";
break;
case \".tar\":
$filedata[\'type\'] = \"application/x-tar\";
break;
case \".txt\":
$filedata[\'type\'] = \"text/plain\";
break;
case \".zip\":
$filedata[\'type\'] = \"application/zip\";
break;
default:
$filedata[\'type\'] = \"application/octet-stream\";
break;
}
return $filedata;
}
}
?>
index.php 发送邮件的具体实现
<?php
require \'email.class.php\';
$mailto=\'*********@qq.com\'; //收件人
$subject=\"恭喜您开通年费会员成功\"; //邮件主题
$body=\"回复TD退订\"; //邮件内容
sendmailto($mailto,$subject,$body);
echo \"finish\".date(\'时间：Y年m月d日 H:i\');
function sendmailto($mailto, $mailsub, $mailbd)
{
//require_once (\'email.class.php\');
//##########################################
$smtpserver = \"smtp.163.com\"; //SMTP服务器
$smtpserverport = 25; //SMTP服务器端口
$smtpusermail = \"***********@163.com\"; //SMTP服务器的用户邮箱
$smtpemailto = $mailto;
$smtpuser = \"*******@163.com\"; //SMTP服务器的用户帐号
$smtppass = \"**********\"; //SMTP服务器的用户密码
$mailsubject = $mailsub; //邮件主题
$mailsubject = \"=?UTF-8?B?\" . base64_encode($mailsubject) . \"?=\"; //防止乱码
$mailbody = $mailbd; //邮件内容
//$mailbody = \"=?UTF-8?B?\".base64_encode($mailbody).\"?=\"; //防止乱码
$mailtype = \"HTML\"; //邮件格式（HTML/TXT）,TXT为文本邮件. 139邮箱的短信提醒要设置为HTML才正常
##########################################
$smtp = new smtp($smtpserver, $smtpserverport, true, $smtpuser, $smtppass); //这里面的一个true是表示使用身份验证,否则不使用身份验证.
$smtp->debug = TRUE; //是否显示发送的调试信息
$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
}
?>
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