PHP获取指定IP地址的whois数据

---

PHP #ip地址 #whois2012-10-30 13:08

---

要获取指定IP地址的whois数据，可使用如下代码：

<?php
/**
	Program to perform ip whois
	Silver Moon
	m00n.silv3r@gmail.com
*/

$ip = "74.65.112.23";

$whois = get_whois($ip);

echo "<pre>$whois</pre>";

/**
	Get the whois content of an ip by selecting the correct server
*/
function get_whois($ip)
{
	$w = get_whois_from_server('whois.iana.org' , $ip);

	preg_match('@whois.[w.]*@si' , $w , $data);

	$whois_server = $data[0];

	//echo $whois_server;

	//now get actual whois data
	$whois_data = get_whois_from_server($whois_server , $ip);

	return $whois_data;
}

/**
	Get the whois result from a whois server
	return text
*/
function get_whois_from_server($server , $ip)
{
	$data = '';

	#Before connecting lets check whether server alive or not

	#Create the socket and connect
	$f = fsockopen($server, 43, $errno, $errstr, 3);	//Open a new connection
	if(!$f)
	{
		return '';
	}

	#Set the timeout limit for read
	if(!stream_set_timeout($f , 3))
	{
		die('Unable to set set_timeout');	#Did this solve the problem ?
	}

	#Send the IP to the whois server
	if($f)
	{
		fputs($f, "$ip
");
	}

	/*
		Theory : stream_set_timeout must be set after a write and before a read for it to take effect on the read operation
		If it is set before the write then it will have no effect : http://in.php.net/stream_set_timeout
	*/

	//Set the timeout limit for read
	if(!stream_set_timeout($f , 3))
	{
		die('Unable to stream_set_timeout');	#Did this solve the problem ?
	}

	//Set socket in non-blocking mode
	stream_set_blocking ($f, 0 );

	//If connection still valid
	if($f)
	{
		while (!feof($f))
		{
			$data .= fread($f , 128);
		}
	}

	//Now return the data
	return $data;
}

---

相关文章

• php5中北京时间差8小时的解决办法 2012/10/30
• PHP计算两个时间相差的天/时/分/秒 2012/10/30
• PHP文件夹复制的函数 2012/10/30
• PHP生成缩略图的函数 2012/10/30
• php获取文件类型和文件信息 2012/10/30
• PHP将多维数组转为一维数组的函数 2012/10/30
• PHP实现的session数据库交互类 2012/10/30
• PHP获取客户端IP地址的函数 2012/10/30
• php多文件上传的三种方法 2012/10/29
• PHP支持多种编码截取中文字符串的函数 2012/10/29