php smtp实现发送邮件功能

本文实例为大家分享了php smtp发送邮件功能的具体代码，供大家参考，具体内容如下

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<?php

header("Content-Type: text/html; charset=utf-8");

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 = "";

$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");

}

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;

}

?>

调用

php smtp实现发送邮件功能

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