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：
代码如下:
"*****",
* "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) < 6){
$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<" . $this->_from . ">\r\n";
$mail .= "TO:<" . $this->_to . ">\r\n";
$mail .= "Subject:" . $this->_subject ."\r\n\r\n";
$mail .= $this->_body . "\r\n.\r\n";
}
else{
$mail = "FROM:test<" . $this->_from . ">\r\n";
$mail .= "TO:<" . $this->_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",
array(base64_encode($this->_password) . "\r\n",235),
array("MAIL FROM:<" . $this->_from . ">\r\n",
array("RCPT TO:<" . $this->_to . ">\r\n",
array("DATA\r\n",354),
array($mail,
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."/"; 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 $mail->error(); return 1; }
'; //发送命令给服务器 try{ if(socket_write($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."/"; 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。
