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这篇文章给大家介绍怎么在PHP中利用SMTP邮件服务器发送邮件，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。
具体如下：
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);
}
?>关于怎么在PHP中利用SMTP邮件服务器发送邮件就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
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