在网上找的代码。两个文件：
sent_mail.php <?php require_once ('email.class.php'); //########################################## $smtpserver = "smtp.163.com";//SMTP服务器 $smtpserverport =25;//SMTP服务器端口 $smtpusermail = "xxx@163.com";//SMTP服务器的用户邮箱 $smtpemailto = "xxx@qq.com";//发送给谁 $smtpuser = "xxx@163.com";//SMTP服务器的用户帐号 $smtppass = "*****";//SMTP服务器的用户密码 $mailsubject = "PHP100测试邮件系统";//邮件主题 $mailbody = "<h1> 这是一个测试程序 PHP100.com </h1>";//邮件内容 $mailtype = "HTML";//邮件格式（HTML/TXT）,TXT为文本邮件 ########################################## $smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);//这里面的一个true是表示使用身份验证,否则不使用身份验证. $smtp->debug = true;//是否显示发送的调试信息 $smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype); ?>
email.class.php <? class smtp { /* Public Variables */ public $smtp_port; public $time_out; public $host_name; public $log_file; public $relay_host; public $debug; public $auth; public $user; public $pass; /* Private Variables */ private $sock; /* Constractor */ function smtp($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 =""; $this->sock = FALSE; } /* Main Function */ function sendmail($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); $header .= "MIME-Version:1.0\r\n"; if($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))); } $sent = TRUE; foreach ($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"); } echo "<br>"; echo $header; 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) { $domain = preg_replace("/^.+@([^@]+)$/", "\\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]/", $response)) { fputs($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) { $comment = "/\\([^()]*\\)/"; while (preg_match($comment, $address)) { $address = preg_replace($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 $message."<br>"; } } function get_attach_type($image_tag) { // $filedata = array(); $img_file_con=fopen($image_tag,"r"); unset($image_data); while ($tem_buffer=AddSlashes(fread($img_file_con,filesize($image_tag)))) $image_data.=$tem_buffer; fclose($img_file_con); $filedata['context'] = $image_data; $filedata['filename']= basename($image_tag); $extension=substr($image_tag,strrpos($image_tag,"."),strlen($image_tag)-strrpos($image_tag,".")); switch($extension){ case ".gif": $filedata['type'] = "image/gif"; break; case ".gz": $filedata['type'] = "application/x-gzip"; break; case ".htm": $filedata['type'] = "text/html"; break; case ".html": $filedata['type'] = "text/html"; break; case ".jpg": $filedata['type'] = "image/jpeg"; break; case ".tar": $filedata['type'] = "application/x-tar"; break; case ".txt": $filedata['type'] = "text/plain"; break; case ".zip": $filedata['type'] = "application/zip"; break; default: $filedata['type'] = "application/octet-stream"; break; } return $filedata; } } // end class ?>