利用php发送邮件

啥都不说了，直接上代码

<?php  //邮件发送程序  //导入SMTP邮件发送类  require("mail.php");  //SMTP邮件服务器  $smtpserver = "smtp.163.com";  //SMTP服务器端口  $smtpserverport = 25;  //SMTP用户邮箱地址  $smtpusermail = "xxxxxx";  //收件人邮箱地址  $smtpemailto = "xxxxxxx";  //SMTP用户名和密码  $smtpuser = "xxxxxx";  $smtppass = "xxxxxxx";  //是否是用身份验证  $isauth = true;  //邮件格式（HTML/TXT）,TXT为文本邮件   $mailtype = "TXT";  //邮件主题   $mailsubject = "大帅是个好同志";  //邮件内容   $mailbody = "嘎嘎嘎嘎嘎嘎嘎嘎嘎嘎嘎嘎嘎嘎";  //新建SMTP实例  $smtp = new smtp($smtpserver, $smtpserverport, $isauth, $smtpuser, $smtppass);  //是否显示发送的调试信息   $smtp->debug = false;  //发送邮件  $res = $smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);  echo "邮件已经发送";  //var_dump($res);?> 

下面要用到一个类

<?php class smtp {     /* Public Variables */    var $smtp_port;     var $time_out;     var $host_name;     var $log_file;     var $relay_host;     var $debug;     var $auth;     var $user;     var $pass;     /* Private Variables */     var $sock;     /* Constractor */    function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$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 = "a.txt";         $this->sock = FALSE; }     /* Main Function */    function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")     {         $mail_from = $this->get_address($this->strip_comment($from));         $body = preg_replace("/(^|(\r\n))(\.)/", "\1.\3", $body);         $header = '';        $header .= "MIME-Version:1.0\r\n";         if($mailtype=="HTML")         {             $header .= "Content-Type:text/html\r\n";         }         $header .= "To: ".$to."\r\n";         if ($cc != "")          {             $header .= "Cc: ".$cc."\r\n";         }         $header .= "From: $from<".$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: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\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)));         }         $sent = TRUE;         var_dump($TO);        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 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 (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($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", $address);         if (!@getmxrr($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, "\r\n.\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 (!preg_match("/^[23]/i", $response))          {             fputs($this->sock, "QUIT\r\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 = "/\([^()]*\)/i";         while (preg_match($comment, $address))          {             $address = ereg_replace($comment, "", $address);         }         return $address;     }     function get_address($address)     {         $address = preg_replace("/([ \t\r\n])+/", "", $address);         $address = preg_replace("/^.*<(.+)>.*$/", "\1", $address);         return $address;     }     function smtp_debug($message)     {         if ($this->debug)          {             echo $message;         }     } } ?>

这里的SMTP用户名和密码
需要去相应的邮箱去设置

$smtpuser = "xxxxx";  $smtppass = "xxxxxx";  

我用的是163邮箱所以

$smtpserver = "smtp.163.com";