PHP判断IP并转跳到相应城市分站的方法

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

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：

<?php 
class QQWry{ 
 var $StartIP=0; 
 var $EndIP=0; 
 var $Country=''; 
 var $Local=''; 
 var $CountryFlag=0;
// 标识 Country位置 
// 0x01,随后3字节为Country偏移,没有Local 
// 0x02,随后3字节为Country偏移，接着是Local 
// 其他,Country,Local,Local有类似的压缩。可能多重引用。 
 var $fp; 
 var $FirstStartIp=0; 
 var $LastStartIp=0; 
 var $EndIpOff=0 ; 
 function getStartIp($RecNo){ 
 $offset=$this->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($offset<12) 
 return ''; 
 @fseek($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 <= 1){ 
 $this->Country="FileDataError"; 
 fclose($this->fp) ; 
 return 2 ; 
 } 
 $RangB= 0; 
 $RangE= $RecordCount; 
 // Match ... 
 while ($RangB < $RangE-1) 
 { 
 $RecNo= floor(($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 <= $ip ) && ( $this->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; 
 } 
 } 
?>

实例演示如下：

$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。