php判断ip并转跳到相应城市分站的方法 这篇文章主要介绍了php判断ip并转跳到相应城市分站的方法,实例分析了php解析url及跳转的技巧,具有一定参考借鉴价值,需要的朋友可以参考下
本文实例讲述了php判断ip并转跳到相应城市分站的方法。分享给大家供大家参考。具体实现方法如下：
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firststartip+$recno * 7 ;
@fseek($this->fp,$offset,seek_set) ;
$buf=fread($this->fp ,7) ;
$this->endipoff=ord($buf[4])+(ord($buf[5])*256)+(ord($buf[6])*256*256);
$this->startip=ord($buf[0])+(ord($buf[1])*256)+(ord($buf[2])*256*256)+(ord($buf[3])*256*256*256);
return $this->startip;
}
function getendip(){
@fseek ( $this->fp , $this->endipoff , seek_set ) ;
$buf=fread ( $this->fp , 5 ) ;
$this->endip=ord($buf[0]) + (ord($buf[1])*256) + (ord($buf[2])*256*256) + (ord($buf[3])*256*256*256);
$this->countryflag=ord ( $buf[4] ) ;
return $this->endip ;
}
function getcountry(){
switch ( $this->countryflag ) {
case 1:
case 2:
$this->country=$this->getflagstr ( $this->endipoff+4) ;
//echo sprintf('endipoffset=(%x)',$this->endipoff );
$this->local=( 1 == $this->countryflag )? '' : $this->getflagstr ( $this->endipoff+8);
break ;
default :
$this->country=$this->getflagstr ($this->endipoff+4);
$this->local=$this->getflagstr ( ftell ( $this->fp ));
}
}
function getflagstr ($offset){
$flag=0 ;
while(1){
@fseek($this->fp ,$offset,seek_set) ;
$flag=ord(fgetc($this->fp ) ) ;
if ( $flag == 1 || $flag == 2 ) {
$buf=fread ($this->fp , 3 ) ;
if ($flag==2){
$this->countryflag=2;
$this->endipoff=$offset - 4 ;
}
$offset=ord($buf[0]) + (ord($buf[1])*256) + (ord($buf[2])* 256*256);
}
else{
break ;
}
}
if($offset
return '';
@fseek($this->fp , $offset , seek_set ) ;
return $this->getstr();
}
function getstr ( )
{
$str='' ;
while ( 1 ) {
$c=fgetc ( $this->fp ) ;
//echo $cn ;
if(ord($c[0])== 0 )
break ;
$str.= $c ;
}
//echo $str n;
return $str ;
}
function qqwry ($dotip='') {
if( !is_string($dotip) || $dotip==''){return;}
if(preg_match(/^127/,$dotip)){$this->country=本地网络;return ;}
elseif(preg_match(/^192/,$dotip)) {$this->country=局域网;return ;}
$nret;
$ip=$this->iptoint ( $dotip );
$this->fp= fopen(__qqwry__, rb);
if ($this->fp == null) {
$szlocal= openfileerror;
return 1;
}
@fseek ( $this->fp , 0 , seek_set );
$buf=fread ( $this->fp , 8 );
$this->firststartip=ord($buf[0]) + (ord($buf[1])*256) + (ord($buf[2])*256*256) + (ord($buf[3])*256*256*256);
$this->laststartip=ord($buf[4]) + (ord($buf[5])*256) + (ord($buf[6])*256*256) + (ord($buf[7])*256*256*256);
$recordcount= floor(($this->laststartip - $this->firststartip) / 7);
if ($recordcount
$this->country=filedataerror;
fclose($this->fp) ;
return 2 ;
}
$rangb= 0;
$range= $recordcount;
// match ...
while ($rangb
{
$recno= floor(($rangb + $range) / 2);
$this->getstartip ( $recno ) ;
if ( $ip == $this->startip )
{
$rangb=$recno ;
break ;
}
if ($ip>$this->startip)
$rangb= $recno;
else
$range= $recno;
}
$this->getstartip ( $rangb ) ;
$this->getendip ( ) ;
if ( ( $this->startip endip >= $ip ) ){
$nret=0 ;
$this->getcountry ( ) ;
//这样不太好..............所以..........
$this->local=str_replace(area error, ,$this->local);
}
else{
$nret=3 ;
$this->country='未知' ;
$this->local='' ;
}
fclose ( $this->fp );
$this->country=preg_replace(/(cz88.net)|(纯真网络)/,局域网/未知,$this->country);
$this->local=preg_replace(/(cz88.net)|(纯真网络)/,局域网/未知,$this->local);
//////////////看看 $nret在上面的值是什么0和3，于是将下面的行注释掉
return $nret ;
//return $this->country $this->local;#如此直接返回位置和国家便可以了
}
function iptoint($ip) {
$array=explode('.',$ip);
$int=($array[0] * 256*256*256) + ($array[1]*256*256) + ($array[2]*256) + $array[3];
return $int;
}
}
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实例演示如下：
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$qqwry=new qqwry;
$qqwry->qqwry(60.31.95.255);
$country = $qqwry->country;
echo $qqwry->country.,.$qqwry->local;
希望本文所述对大家的php程序设计有所帮助。
http://www.bkjia.com/phpjc/973923.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/973923.htmltecharticlephp判断ip并转跳到相应城市分站的方法 这篇文章主要介绍了php判断ip并转跳到相应城市分站的方法,实例分析了php解析url及跳转的技巧,具有一...