php fsockopen邮箱发送实例代码

debug = true; //是否开启调试,只在测试程序时使用，正式使用时请将此行注释
$to = "你要发给的那个人的邮箱地址"; //收件人
$subject = "你好";
$body = "你发送的内容 ";
$send = $smtp->sendmail($to, $sender, $subject, $body, $mailtype);
if ($send == 1) {
    echo "邮件发送成功";
} else {
    echo "邮件发送失败
";
    //echo "原因：".$this->smtp->logs;
    
}
?>

邮箱发送类smtp.class.php

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 = "";
        $this->sock = false;
    }
    /* main function */
    function sendmail($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);
        $header.= "mime-version:1.0r\n";
        if ($mailtype == "html") {
            $header.= "content-type:text/htmlr\n";
        }
        $header.= "to: " . $to . "r\n";
        if ($cc != "") {
            $header.= "cc: " . $cc . "r\n";
        }
        $header.= "from: $from;r\n";
        $header.= "subject: " . $subject . "r\n";
        $header.= $additional_headers;
        $header.= "date: " . date("r") . "r\n";
        $header.= "x-mailer:by redhat (php/" . phpversion() . ")r\n";
        list($msec, $sec) = explode(" ", microtime());
        $header.= "message-id: ;r\n";
        $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 ;\n");
            } else {
                $this->log_write("error: cannot send email to ;\n");
                $sent = false;
            }
            fclose($this->sock);
            $this->log_write("disconnected from remote host\n");
        }
        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 (!$this->smtp_putcmd("auth logi\n", base64_encode($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:;")) {
            return $this->smtp_error("sending mail from command");
        }
        if (!$this->smtp_putcmd("rcpt", "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 $this->smtp_error("sending ;;.;; [eom]");
        }
        if (!$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, "rn.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 (!ereg("^[23]", $response)) {
            fputs($this->sock, "quitr\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) {
        $comment = "([^()]*)";
        while (ereg($comment, $address)) {
            $address = ereg_replace($comment, "", $address);
        }
        return $address;
    }
    function get_address($address) {
        $address = ereg_replace("([ trn])+", "", $address);
        $address = ereg_replace("^.*;.*$", "1", $address);
        return $address;
    }
    function smtp_debug($message) {
        if ($this->debug) {
            echo $message;
        }
    }
}
function sendmail($smtpserver, $smtpuser, $smtppass, $smtpemailto, $smtpusermail, $mailsubject, $mailbody) {
    $smtp = new smtp($smtpserver, 25, true, $smtpuser, $smtppass);
    //$smtp->debug = true;
    $smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, "html");
}
//such as
//sendmail("smtp.126.com","[e-mail]","password","[e-mail]","[e-mail]","title","body");
?>