刘春龙的博客

使用sock技术发邮件，无需服务器支持。速度快！！

function send_mail($to,$subject,$body)
{
	/////////////Smtp信息，可以修改成你的，//////////
	$loc_host = "longbill";        //发信计算机名，可随意
	$smtp_acc = "longbill.mail";   //Smtp认证的用户名，
	$smtp_pass = "longbill";         //Smtp认证的密码，
	$smtp_host = "smtp.163.com";     //SMTP服务器地址，
	$from = "longbill.mail@163.com"; //要与smtp信息对应 ,否则会失败
	/////////////Smtp信息完//////////////////////////////////
	$headers = "Content-Type: text/plain; charset="gb2312"rnContent-Transfer-Encoding: base64";
	$lb="rn";                    //linebreak
	$hdr = explode($lb,$headers);  //解析后的hdr
	if($body)
	{
		$bdy = preg_replace("/^./","..",explode($lb,$body));
	}//解析后的Body
	$smtp = array(
		//1、EHLO，期待返回220或者250
		array("EHLO ".$loc_host.$lb,"220,250","HELO error: "),
		//2、发送Auth Login，期待返回334
		array("AUTH LOGIN".$lb,"334","AUTH error:"),
		//3、发送经过Base64编码的用户名，期待返回334
		array(base64_encode($smtp_acc).$lb,"334","AUTHENTIFICATION error : "),
		//4、发送经过Base64编码的密码，期待返回235
		array(base64_encode($smtp_pass).$lb,"235","AUTHENTIFICATION error : ")
	);
	//5、发送Mail From，期待返回250
	$smtp[] = array("MAIL FROM: <".$from.">".$lb,"250","MAIL FROM error: ");
	//6、发送Rcpt To。期待返回250
	$smtp[] = array("RCPT TO: <".$to.">".$lb,"250","RCPT TO error: ");
	//7、发送DATA，期待返回354
	$smtp[] = array("DATA".$lb,"354","DATA error: ");
	//8.0、发送From
	$smtp[] = array("From: ".$from.$lb,"","");
	//8.2、发送To
	$smtp[] = array("To: ".$to.$lb,"","");
	//8.1、发送标题
	$smtp[] = array("Subject: ".$subject.$lb,"","");
	//8.3、发送其他Header内容
	foreach($hdr as $h) {$smtp[] = array($h.$lb,"","");}
	//8.4、发送一个空行，结束Header发送
	$smtp[] = array($lb,"","");
	//8.5、发送信件主体
	if($bdy)
	{
		foreach($bdy as $b)
		{
			$smtp[] = array(base64_encode($b.$lb).$lb,"","");
		}
	}
	//9、发送“.”表示信件结束，期待返回250
	$smtp[] = array(".".$lb,"250","DATA(end)error: ");
	//10、发送Quit，退出，期待返回221
	$smtp[] = array("QUIT".$lb,"221","QUIT error: ");
	//打开smtp服务器端口
	$fp = @fsockopen($smtp_host, 25);
	if (!$fp) echo "<b>Error:</b> Cannot conect to ".$smtp_host."<br>";
	while($result = @fgets($fp, 1024))
	{
		if(substr($result,3,1) == " ")  break; 
	}
	$result_str="";
	//发送smtp数组中的命令/数据
	foreach($smtp as $req)
	{
		//发送信息
		@fputs($fp, $req[0]);
		//如果需要接收服务器返回信息，则
		if($req[1])
		{
			//接收信息
			while($result = @fgets($fp, 1024))
			{
				if(substr($result,3,1) == " ") { break; }
			}
			if (!strstr($req[1],substr($result,0,3)))
			{
				$result_str.=$req[2].$result."<br>";
			}
		}
	}
	//关闭连接
	@fclose($fp);
	if ($result_str==""){return "发送成功!!";}else {return $result_str;}
	}

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