php发送邮件

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本文介绍了一个使用 PHP 实现的 SMTP 邮件发送类，该类能够通过 SMTP 服务器发送 HTML 或纯文本邮件，并支持认证、日志记录等功能。

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//先写一个类

<?
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 = 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");
		}
		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) {
		$domain = ereg_replace("^.+@([^@]+)$", "\\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 . "<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;
	}

}
?>

//调用类

<?php
include_once("smtp.php");
$smtpserver = "smtp.qq.com";//SMTP服务器
$smtpserverport =25;//SMTP服务器端口
$smtpusermail = "1234567@qq.com";//SMTP服务器的用户邮箱
$smtpemailto = "7654321@gmail.com";//发送给谁
$smtpuser = "1234567@qq.com";//SMTP服务器的用户帐号
$smtppass = "password";//SMTP服务器的用户密码
$mailsubject = "测试邮件系统";//邮件主题
$mailbody = "<h1> 这是一个测试程序 </h1>";//邮件内容
$mailtype = "HTML";//邮件格式（HTML/TXT）,TXT为文本邮件
if($_POST[submit])
{
$smtp= new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);
$smtp->debug = FALSE;//是否显示发送的调试信息
$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
}
?>
//注意：要在qq邮箱里设置开启服务：POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务
<form action="test.php" method="post">
<table>
<tr>
<td > <input type="submit" name="submit" value="Send"/></td>
</tr>
</table>
</form>