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标题 php基于socket实现SMTP发送邮件的方法
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    这篇文章主要介绍了php基于socket实现SMTP发送邮件的方法,实例分析了php采用socket实现smtp发送邮件的原理与技巧,具有一定参考借鉴价值,需要的朋友可以参考下
    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:
    <?php
    /**
    * 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" => "<b>test</b>",
    * "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", 334),
    array(base64_encode($this->_password) . "\r\n", 235),
    array("MAIL FROM:<" . $this->_from . ">\r\n", 250),
    array("RCPT TO:<" . $this->_to . ">\r\n", 250),
    array("DATA\r\n", 354),
    array($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:' . $code . '<br />';
    //发送命令给服务器
    try{
    if(socket_write($this->_socket, $command, strlen($command))){
    //读取服务器返回
    $data = trim(socket_read($this->_socket, 1024));
    echo 'response:' . $data . '<br /><br />';
    if($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" => "<b>test</b>",
    "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。
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更新时间：2025/5/14 7:37:29