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本款源码是一款php 网站同IP查询代码哦，如果你喜欢就进来看看吧。

<?php
iffunction_exists’date_default_timezone_set’)){
date_default_timezone_set’Asia/Shanghai’); //设定时区
}
define”APP_ROOT”,dirnamedirname__FILE__))); //网站根目录

function visitorIP){ //访问者IP
if$_SERVER[‘HTTP_X_FORWARDED_FOR’]){
$ipa = $_SERVER[‘HTTP_X_FORWARDED_FOR’];
}elseif$_SERVER[‘HTTP_CLIENT_IP’]){
$ipa = $_SERVER[‘HTTP_CLIENT_IP’];
}else{
$ipa = $_SERVER[‘REMOTE_ADDR’];
}
return $ipa;
}

function cleanDomain$q,$w=0){ //整理域名 $w=1过滤www.前缀 $w=0不过滤
$q = htmlspecialcharsstrtolowertrim$q)));
ifsubstr$q,0,7) == “http://” || substr$q,0,8) == “https://” || substr$q,0,6) == “ftp://”){
$q = str_replace”http:/”,””,$q);
$q = str_replace”https:/”,””,$q);
$q = str_replace”ftp:/”,””,$q);
}
ifsubstr$q,0,4) == “www.” && $w==1) {
$q = str_replace”www.”,””,$q);
}
$q = trim$q,”/”);
return $q;
}

//获取网页
class HTTPRequest
{
/*
获取网页
*/
var $_fp; // HTTP socket
var $_url; // full URL
var $_host; // HTTP host
var $_protocol; // protocol HTTP/HTTPS)
var $_uri; // request URI
var $_port; // port

// scan url
function _scan_url)
{
$req = $this->_url;

$pos = strpos$req, ‘://’);
$this->_protocol = strtolowersubstr$req, 0, $pos));

$req = substr$req, $pos+3);
$pos = strpos$req, ‘/’);
if$pos === false)
$pos = strlen$req);
$host = substr$req, 0, $pos);

ifstrpos$host, ‘:’) !== false)
{
list$this->_host, $this->_port) = explode’:’, $host);
}
else
{
$this->_host = $host;
$this->_port = $this->_protocol == ‘https’) ? 443 : 80;
}

$this->_uri = substr$req, $pos);
if$this->_uri == ”)
$this->_uri = ‘/’;
}

// constructor
function HTTPRequest$url)
{
$this->_url = $url;
$this->_scan_url);
}

// download URL to string
function DownloadToString)
{
$crlf = “rn”;
$response=””;
// generate request
$req = ‘GET ‘ . $this->_uri . ‘ HTTP/1.0’ . $crlf
. ‘Host: ‘ . $this->_host . $crlf
. $crlf;

// fetch
$this->_fp = @fsockopen$this->_protocol == ‘https’ ? ‘ssl://’ : ”) . $this->_host, $this->_port);
@fwrite$this->_fp, $req);
whileis_resource$this->_fp) && $this->_fp && !feof$this->_fp))
$response .= fread$this->_fp, 1024);
@fclose$this->_fp);

// split header and body
$pos = strpos$response, $crlf . $crlf);
if$pos === false)
return$response);
$header = substr$response, 0, $pos);
$body = substr$response, $pos + 2 * strlen$crlf));

// parse headers
$headers = array);
$lines = explode$crlf, $header);
foreach$lines as $line)
if$pos = strpos$line, ‘:’)) !== false)
$headers[strtolowertrimsubstr$line, 0, $pos)))] = trimsubstr$line, $pos+1));

// redirection?
ifisset$headers[‘location’]))
{
$http = new HTTPRequest$headers[‘location’]);
return$http->DownloadToString$http));
}
else
{
return$body);
}
}
}

function get_html$siteurl) {
//将网页代码存入字符串
$r=new HTTPRequest$siteurl);
$htm=$r->DownloadToString);
return $htm;
}

$visitorip = visitorIP);

$q = cleanDomain$_POST[‘q’]);
$q_encode = urlencode$q);

$title = “同IP站点查询”;

$chaxun_status = 0; //查询状态 -1是没有查询参数，0是查询出错，1是查域名，2是查IP

ifisset$_GET[‘action’]) && trim$_GET[‘action’]) == “do”){ //AJAX调出数据
$ipArr = ReverseIP$q);
ifcount$ipArr)>0){
echo ‘

在此IP找到了’.count$ipArr).’个域名，见下：

‘;
echo ‘

‘;
for$i=0;$i<count$ipArr);$i++){
echo ‘
• ‘.$ipArr[$i].’

‘;
}
echo ‘

‘;
}else{
echo ‘

没有找到IP ‘.$ip.’ 对应的域名记录！

‘;
}
die);
}

function IpToInt$Ip){ //IP转为数字
$array=explode’.’,$Ip);
$Int=$array[0] * 256*256*256) + $array[1]*256*256) + $array[2]*256) + $array[3];
return $Int;
}

function ReverseIP$q){
$htm = get_html’http://www.ip-adress.com/reverse_ip/’.$q);
preg_match_all’/Whois/’, $htm, $tt);
$res = $tt[1];
return $res;
}

ifpreg_match”/[a-zA-Z-_]+/si”,$q)){ //如果查询的是域名
$ip = gethostbyname$q);
if$ip == $q){
$ip = $visitorip;
$chaxun_status = -1;
}else{
$chaxun_status = 1;
}
}elseifereg”^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}$”,$q)){ //如果查询的是IP
$ip = $q;
$chaxun_status = 2;
}else{
$ip = $visitorip;
}
?>

*{margin:0;padding:0;}
body{font-size:12px;font-family: Geneva, Arial, Helvetica, sans-serif;}
a img {border:0;}

.red{color:#f00;}
.center{text-align:center;}
p{padding:5px 0 6px 0;word-break:break-all;word-wrap:break-word;}
.f14{font-size:14px;}
a,a:visited{color:#0353ce;}
table {font-size:12px;}
table th {font-size:12px;font-weight:bold;background-color:#f7f7f7;line-height:200%;padding: 0 5px;}
table th {font-size:12px;font-weight:bold;background:#EDF7FF;padding: 0 5px;color:#014198;line-height:200%;}
.red{color:red}
.blue{color:blue}
#footer{line-height:150%;text-align:center;color:#9c9c9c;padding: 8px 0;}
#footer a,#footer a:visited{color:#9c9c9c;}
ul.lst{padding:0;margin:0;width:100%;}
ul.lst li{list-style-type:none;float:left;padding:0 0 0 12px;line-height:24px;height:24px;overflow:hidden;}
ul.lst li{width:258px!important;width:270px;}

0){ ?>

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