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php用IP查询归属地
class ip_location
{
function init()
{
$this-wrydat = 'ip_area.dat';
$this-fp = fopen($this-wrydat, 'rb');
$this-getipnumber();
$this-getwryversion();
$this - REDIRECT_MODE_0 = 0;
$this - REDIRECT_MODE_1 = 1;
$this - REDIRECT_MODE_2 = 2;
}
function get($str)
{
return $this-$str;
}
function set($str,$val)
{
$this-$str = $val;
}
function getbyte($length,$offset=null)
{
!is_null($offset) fseek($this-fp, $offset, SEEK_SET);
return fread($this-fp, $length);
}
function packip($ip)
{
return pack('N', intval(ip2long($ip)));
}
function getlong($length=4, $offset=null)
{
$chr=null;
for($c=0;$length%4!=0$c(4-$length%4);$c++)
{
$chr .= chr(0);
}
$var = unpack( 'Vlong', $this-getbyte($length, $offset).$chr);
return $var['long'];
}
function getwryversion()
{
$length = preg_match("/coral/i",$this-wrydat)?26:30;
$this-wrydat_version = $this-getbyte($length, $this-firstip-$length);
}
function getipnumber()
{
$this-firstip = $this-getlong();
$this-lastip = $this-getlong();
$this-ipnumber = ($this-lastip-$this-firstip)/7+1;
}
function getstring($data='', $offset=NULL)
{
$char = $this-getbyte(1,$offset);
while(ord($char) 0)
{
$data .= $char;
$char = $this-getbyte(1);
}
return $data;
}
function iplocaltion($ip)
{
$ip = $this-packip($ip);
$low = 0;
$high = $this-ipnumber-1;
$ipposition = $this-lastip;
while($low = $high)
{
$t = floor(($low+$high)/2);
if($ip strrev($this-getbyte(4,$this-firstip+$t*7)))
$high = $t - 1;
else
{
if($ip strrev($this-getbyte(4,$this-getlong(3))))
$low = $t + 1;
else
{
$ipposition = $this-firstip+$t*7;
break;
}
}
}
return $ipposition;
}
function getarea()
{
$b = $this-getbyte(1);
switch(ord($b))
{
case $this - REDIRECT_MODE_0 :
return '';
break;
case $this - REDIRECT_MODE_1:
case $this - REDIRECT_MODE_2:
return $this-getstring('',$this-getlong(3));
break;
default:
return $this-getstring($b);
break;
}
}
function getiplocation($ip)
{
$ippos = $this-iplocaltion($ip);
$this-ip_range_begin = long2ip($this-getlong(4,$ippos));
$this-ip_range_end = long2ip($this-getlong(4,$this-getlong(3)));
$b = $this-getbyte(1);
switch(ord($b))
{
case $this - REDIRECT_MODE_1:
$b = $this-getbyte(1,$this-getlong(3));
if(ord($b) == $this - REDIRECT_MODE_2)
{
$countryoffset = $this-getlong(3);
$this-area = $this-getarea();
$this-country = $this-getstring('',$countryoffset);
}
else
{
$this-country = $this-getstring($b);
$this-area = $this-getarea();
}
break;
case $this - REDIRECT_MODE_2:
$countryoffset = $this-getlong(3);
$this-area = $this-getarea();
$this-country = $this-getstring('',$countryoffset);
break;
default:
$this-country = $this-getstring($b);
$this-area = $this-getarea();
break;
}
}
}
---------------------------------------------------------------
调用方法:
$iploca = new ip_location;
$iploca - init();
$iploca - getiplocation($ip);
$area['country'] = str_replace(array('CZ88.NET'), '', $iploca - get('country'));
$area['area'] = str_replace(array('CZ88.NET'), '', $iploca - get('area'));
$area['country']=='' $area['country']='未知';
$area['area']=='' $area['area']='未知';
return $area;
php怎样获取本机的ipv4地址
// 通过$_SERVER变量
echo $_SERVER['SERVER_ADDR'];
// 通过执行操作符，等同于在命令行下执行该命令，要获取ip的根据返回内容截取
$output = `ipconfig`;
echo 'pre'.$output.'/pre';
// 通过system函数，功能与执行操作符一样
echo 'pre';
$last_line = system('ipconfig', $retval);
echo '
/pre
hr /Last line of the output: ' . $last_line . '
hr /Return value: ' . $retval;
php获取了ip地址，用php怎么获取ip的地理位置？请大虾赐教！
用纯真ip数据库啊，这里有个资料是介绍php操作纯真ip数据库的，是原查询吧query8.com里提取出来的，用时先去网上搜纯真ip数据库下载，查询吧php版读取纯真ip数据库源码
