本文实例讲述了php基于socket实现smtp发送邮件的方法。分享给大家供大家参考。具体分析如下：
php采用socket通过smtp发送邮件。
用的是php的php-sockets扩展，可以发送纯文本和html格式的邮件。代码如下：
复制代码 代码如下:
/**
* 邮件发送类
* 支持发送纯文本邮件和html格式的邮件
* @example
* $config = array(
* from => *****,
* to => ***,
* subject => test,
* body => test,
* username => ***,
* password => ****,
* ishtml => true
* );
*
* $mail = new mysendmail();
*
* $mail->setserver(smtp.126.com);
*
* $mail->setmailinfo($config);
* if(!$mail->sendmail()) {
* echo $mail->error();
* return 1;
* }
*/
class mysendmail {
/**
* @var 邮件传输代理用户名
* @access private
*/
private $_username;
/**
* @var 邮件传输代理密码
* @access private
*/
private $_password;
/**
* @var 邮件传输代理服务器地址
* @access protected
*/
protected $_sendserver;
/**
* @var 邮件传输代理服务器端口
* @access protected
*/
protected $_port=25;
/**
* @var 发件人
* @access protected
*/
protected $_from;
/**
* @var 收件人
* @access protected
*/
protected $_to;
/**
* @var 主题
* @access protected
*/
protected $_subject;
/**
* @var 邮件正文
* @access protected
*/
protected $_body;
/**
* @var 是否是html格式的邮件
* @access protected
*/
protected $_ishtml=false;
/**
* @var socket资源
* @access protected
*/
protected $_socket;
/**
* @var 错误信息
* @access protected
*/
protected $_errormessage;
public function __construct($from=, $to=, $subject=, $body=, $server=, $username=, $password=,$ishtml=, $port=) {
if(!empty($from)){
$this->_from = $from;
}
if(!empty($to)){
$this->_to = $to;
}
if(!empty($subject)){
$this->_subject = $subject;
}
if(!empty($body)){
$this->_body = $body;
}
if(!empty($ishtml)){
$this->_ishtml = $ishtml;
}
if(!empty($server)){
$this->_sendserver = $server;
}
if(!empty($port)){
$this->_port = $port;
}
if(!empty($username)){
$this->_username = $username;
}
if(!empty($password)){
$this->_password = $password;
}
}
/**
* 设置邮件传输代理
* @param string $server 代理服务器的ip或者域名
* @param int $port 代理服务器的端口，smtp默认25号端口
* @param int $localport 本地端口
* @return boolean
*/
public function setserver($server, $port=25) {
if(!isset($server) || empty($server) || !is_string($server)) {
$this->_errormessage = first one is an invalid parameter;
return false;
}
if(!is_numeric($port)){
$this->_errormessage = first two is an invalid parameter;
return false;
}
$this->_sendserver = $server;
$this->_port = $port;
return true;
}
/**
* 设置邮件
* @access public
* @param array $config 邮件配置信息
* 包含邮件发送人、接收人、主题、内容、邮件传输代理的验证信息
* @return boolean
*/
public function setmailinfo($config) {
if(!is_array($config) || count($config) $this->_errormessage = parameters are required;
return false;
}
$this->_from = $config['from'];
$this->_to = $config['to'];
$this->_subject = $config['subject'];
$this->_body = $config['body'];
$this->_username = $config['username'];
$this->_password = $config['password'];
if(isset($config['ishtml'])){
$this->_ishtml = $config['ishtml'];
}
return true;
}
/**
* 发送邮件
* @access public
* @return boolean
*/
public function sendmail() {
$command = $this->getcommand();
$this->socket();
foreach ($command as $value) {
if($this->sendcommand($value[0], $value[1])) {
continue;
}
else{
return false;
}
}
$this->close(); //其实这里也没必要关闭，smtp命令：quit发出之后，，服务器就关闭了连接，本地的socket资源会自动释放
echo 'mail ok!';
return true;
}
/**
* 返回错误信息
* @return string
*/
public function error(){
if(!isset($this->_errormessage)) {
$this->_errormessage = ;
}
return $this->_errormessage;
}
/**
* 返回mail命令
* @access protected
* @return array
*/
protected function getcommand() {
if($this->_ishtml) {
$mail = mime-version:1.0\r\n;
$mail .= content-type:text/html;charset=utf-8\r\n;
$mail .= from:test_from . >\r\n;
$mail .= to:_to . >\r\n;
$mail .= subject: . $this->_subject .\r\n\r\n;
$mail .= $this->_body . \r\n.\r\n;
}
else{
$mail = from:test_from . >\r\n;
$mail .= to:_to . >\r\n;
$mail .= subject: . $this->_subject .\r\n\r\n;
$mail .= $this->_body . \r\n.\r\n;
}
$command = array(
array(helo sendmail\r\n, 250),
array(auth login\r\n, 334),
array(base64_encode($this->_username) . \r\n, 334),
array(base64_encode($this->_password) . \r\n, 235),
array(mail from:_from . >\r\n, 250),
array(rcpt to:_to . >\r\n, 250),
array(data\r\n, 354),
array($mail, 250),
array(quit\r\n, 221)
);
return $command;
}
/**
* @access protected
* @param string $command 发送到服务器的smtp命令
* @param int $code 期望服务器返回的响应吗
* @param boolean
*/
protected function sendcommand($command, $code) {
echo 'send command:' . $command . ',expected code:' . $code . '
';
//发送命令给服务器
try{
if(socket_write($this->_socket, $command, strlen($command))){
//读取服务器返回
$data = trim(socket_read($this->_socket, 1024));
echo 'response:' . $data . '
';
if($data) {
$pattern = /^.$code.http://www.jb51.net/;
if(preg_match($pattern, $data)) {
return true;
}
else{
$this->_errormessage = error: . $data . |**| command:;
return false;
}
}
else{
$this->_errormessage = error: . socket_strerror(socket_last_error());
return false;
}
}
else{
$this->_errormessage = error: . socket_strerror(socket_last_error());
return false;
}
}catch(exception $e) {
$this->_errormessage = error: . $e->getmessage();
}
}
/**
* 建立到服务器的网络连接
* @access private
* @return boolean
*/
private function socket() {
if(!function_exists(socket_create)) {
$this->_errormessage = extension php-sockets must be enabled;
return false;
}
//创建socket资源
$this->_socket = socket_create(af_inet, sock_stream, getprotobyname('tcp'));
if(!$this->_socket) {
$this->_errormessage = socket_strerror(socket_last_error());
return false;
}
//连接服务器
if(!socket_connect($this->_socket, $this->_sendserver, $this->_port)) {
$this->_errormessage = socket_strerror(socket_last_error());
return false;
}
socket_read($this->_socket, 1024);
return true;
}
/**
* 关闭socket
* @access private
* @return boolean
*/
private function close() {
if(isset($this->_socket) && is_object($this->_socket)) {
$this->_socket->close();
return true;
}
$this->_errormessage = no resource can to be close;
return false;
}
}
/**************************** test ***********************************/
$config = array(
from => xxxxx,
to => xxxxx,
subject => test,
body => test,
username => xxxxx,
password => ******,
//ishtml => true
);
$mail = new mysendmail();
$mail->setserver(smtp.126.com);
$mail->setmailinfo($config);
if(!$mail->sendmail()) {
echo $mail->error();
return 1;
}
希望本文所述对大家的php程序设计有所帮助。