首先，建立一个index.html文件，代码如下：

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Mail Form


To



Subject


Message

然后新建一个“mail.php”文档把传输的文档进行发送

debug = TRUE;//是否显示发送的调试信息 
$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype); 
echo ""; 
exit; 
} 
?>

最后编写一个邮件类“smtp.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("(^|(\\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"); 
} 
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 $this->smtp_error("sending . [EOM]"); 
} 
if (!$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 (!ereg("^[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) 
{ 
$comment = "\\([^()]*\\)"; 
while (ereg($comment, $address)) 
{ 
$address = ereg_replace($comment, "", $address); 
} 
return $address; 
} 
function get_address($address) 
{ 
$address = ereg_replace("([ \\t\\r\\n])+", "", $address); 
$address = ereg_replace("^.*<(.+)>.*$", "\\1", $address); 
return $address; 
} 
function smtp_debug($message) 
{ 
if ($this->debug) 
{ 
//echo $message; 
} 
} 
} 
?>

当前名称：PHP演示如何发送邮件给某个邮箱
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