本文实例讲述了PHP实现发送邮件的方法。分享给大家供大家参考，具体如下：
邮件发送类
<?php
/*邮件发送类
*功能：使用smtp服务器发送邮件
*/
class smtp {
/* 全局变量 */
var $smtp_port;
var $time_out;
var $host_name;
var $log_file;
var $relay_host;
var $debug;
var $auth;
var $user;
var $pass;
var $sock;
/* 构造函数 */
function smtp($relay_host = "", $smtp_port = 25, $auth = false, $log_file="", $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->log_file = $log_file; //邮件发送成功失败的日志记录文件
$this->sock = FALSE;
}
function mail_encode($str)
{
//return '=?utf-8?B?'.base64_encode(mb_convert_encoding($str, "GBK", "UTF-8")).'?=';
return "=?UTF-8?B?".base64_encode($str)."?=";
}
/* 主函数，发送邮件 */
function sendmail($flag, $boundary, $to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "") {
$mail_from = $this->get_address ( $this->strip_comment ( $from ) );
$body = ereg_replace ( '(^|(rn))(.)', "1.3", $body );
$header = "MIME-Version:1.0rn";
if ($mailtype == "HTML") {
if ($flag == 2) {
$header .= "Content-Type:multipart/mixed; boundary= $boundaryrn";
} else {
$header .= "Content-Type:text/html; charset="UTF-8" rn";
}
}
$header .= "To: " . $to . "rn";
if ($cc != "") {
$header .= "Cc: " . $cc . "rn";
}
$header .= "From: $from<" . $from . ">rn";
$subject = self::mail_encode($subject);
$header .= "Subject: " . $subject . "rn";
$header .= $additional_headers;
$header .= "Date: " . date ( "r" ) . "rn";
$header .= "X-Mailer:By redhat (PHP/" . phpversion () . ")rn";
list ( $msec, $sec ) = explode ( " ", microtime () );
$header .= "Message-ID: <" . date ( "YmdHis", $sec ) . "." . ($msec * 1000000) . "." . $mail_from . ">rn";
$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 . "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 hostn" );
}
return $sent;
}
/* 私有函数 */
function smtp_send($helo, $from, $to, $header, $body = "") {
if (! $this->smtp_putcmd ( "HELO", $helo )) {
return $this->smtp_error ( "sending HELO command" );
}
if ($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}quot;, "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 . "rn" . $body );
$this->smtp_debug ( "> " . str_replace ( "rn", "n" . "> ", $header . "n> " . $body . "n> " ) );
return TRUE;
}
function smtp_eom() {
fputs ( $this->sock, "rn.rn" );
$this->smtp_debug ( ". [EOM]n" );
return $this->smtp_ok ();
}
function smtp_ok() {
$response = str_replace ( "rn", "", fgets ( $this->sock, 512 ) );
$this->smtp_debug ( $response . "n" );
if (! ereg ( "^[23]", $response )) {
fputs ( $this->sock, "QUITrn" );
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 . "rn" );
$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 ( ereg ( $comment, $address ) ) {
$address = ereg_replace ( $comment, "", $address );
}
return $address;
}
function get_address($address) {
$address = ereg_replace ( "([ trn])+", "", $address );
$address = ereg_replace ( "^.*<(.+)>.*{1}quot;, "1", $address );
return $address;
}
function smtp_debug($message) {
if ($this->debug) {
echo $message;
}
}
}
?>
调用邮件发送类发送邮件
<?php
//文件全路径名称，文件名称
function send_smtp_mail($file, $fileName) {
require ("smtp_mail.php");
date_default_timezone_set ( 'Asia/Shanghai' );
$subject = date ( "Y-m-d" ) . "邮件标题"; //邮件标题
$content = "邮件内容！"; //邮件内容
//$file = "/a/b/c.txt"; //附件
//$fileName = "email_log.log"; //附件名称
$smtpserver = "服务器ip"; //SMTP服务器
$smtpserverport = 25; //SMTP服务器端口
$bcc = ""; //副收件人
//$smtpuser = ""; //SMTP服务器的用户帐号
//$smtppass = ""; //SMTP服务器的用户密码
$smtpmailfrom = "aaa@bbb.com"; //SMTP服务器的用户邮箱,邮件发送者
$smtpemailto = "邮箱1，邮箱2，邮箱3"; //邮件接受者
$cc = ""; //抄送
$mailsubject = $subject; //邮件主题
$mailtype = "HTML"; //邮件格式（HTML/TXT）,TXT为文本邮件
$additional_headers = "";
$smtplogfile = ""; //发送邮件的日志文件，如果没有就不记录
// 定义分界线
$boundary = uniqid ( "" );
$headers = "Content-type: multipart/mixed; boundary= $boundaryrn";
//附件类型
$mimeType = "application/unknown";
// 打开文件
$fp = fopen ( $file, "r" );
// 把整个文件读入一个变量
$read = fread ( $fp, filesize ( $file ) );
//我们用base64方法把它编码
$read = base64_encode ( $read );
//把这个长字符串切成由每行76个字符组成的小块
$read = chunk_split ( $read );
fclose ( $fp ); //关闭文件
/* 邮件发送代码 */
$flag = 1; //判断使用什么样的文件头1或2
if ($fileName == "") {
//没有附件
$body = $content;
} else {
//有附件
$flag = 2;
if ($mailtype == "HTML") {
$body = "--$boundaryrn"; //此必须rn
$body .= "Content-Type:text/htmlrnrn"; //此必须rnrn
$body .= "$contentrn";
$body .= "--$boundaryrn";
$body .= "Content-type: $mimeType; name=$fileNamern";
$body .= "Content-disposition: attachment; filename=$fileNamern";
$body .= "Content-Transfer-Encoding: BASE64rnrn";
$body .= "$readrnrn";
$body .= "--$boundary--rn";
} else {
$body = "--$boundaryrn";
$body .= "Content-type: Content-type: text/plain; charset=iso-8859-1rnrn";
$body .= "Content-transfer-encoding: 8bitrnrn";
$body .= "$contentrnrn";
$body .= "--$boundaryrn";
$body .= "Content-type: $mimeType; name=$fileNamernrn";
$body .= "Content-disposition: attachment; filename=$fileNamernrn";
$body .= "Content-transfer-encoding: base64rnrn";
$body .= "$readrnrn";
$body .= "--$boundary--rn";
}
}
$mailbody = $body; //邮件内容
//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 = new smtp ( $smtpserver, $smtpserverport, false, $smtplogfile );
//$smtp->debug = TRUE;//是否显示发送的调试信息
if ($smtp->sendmail ( $flag, $boundary, $smtpemailto, $smtpmailfrom, $mailsubject, $mailbody, $mailtype, $cc, $bcc, $additional_headers )) {
echo ("发送成功");
} else {
echo ("发送失败");
}
}
?>
希望本文所述对大家php程序设计有所帮助。