How to convert ip address to real address code in php

php method to convert ip address to real address: 1. Create PHP sample file; 2. Pass "define('WEB_ROOT',dirname(__FILE__));echo convertip('ip','full' );" method to achieve conversion.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

php converts the IP address to a real address The method

The method usage example is as follows

define('WEB_ROOT',dirname(__FILE__));
echo convertip('111.63.244.69','full');

func convertip

function convertip($ip,$integrity='simple'){
    $return='';
    $integrity=in_array($integrity,array('simple','full'))?$integrity:'simple';
    if(preg_match("/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/",$ip)){
        $iparray=explode('.',$ip);
        if($iparray[0]==10||$iparray[0]==127||($iparray[0]==192&&$iparray[1]==168)||($iparray[0]==172&&($iparray[1]>=16&&$iparray[1]<=31))){
            $return = &#39;- LAN&#39;;
        }elseif($iparray[0]>255||$iparray[1]>255||$iparray[2]>255||$iparray[3]>255){
            $return=&#39;- Invalid IP Address&#39;;
        }else{
            $tinyipfile=WEB_ROOT.&#39;./tinyipdata.dat&#39;;//IP==地址数据包精简版
            $fullipfile=WEB_ROOT.&#39;./wry.dat&#39;;//IP==地址数据包完整版
            if($integrity==&#39;simple&#39;&&@file_exists($tinyipfile)){
                $return=convertip_tiny($ip,$tinyipfile);
            }elseif(@file_exists($fullipfile)){
                $return=convertip_full($ip,$fullipfile);
            }
        }
    }
    return $return;
}

func convertip_tiny

function convertip_tiny($ip,$ipdatafile){
    static $fp=NULL,$offset=array(),$index=NULL;
    $ipdot=explode('.',$ip);
    $ip=pack('N',ip2long($ip));
    $ipdot[0]=(int)$ipdot[0];
    $ipdot[1]=(int)$ipdot[1];
    if($fp===NULL&&$fp=@fopen($ipdatafile,'rb')){
        $offset=@unpack('Nlen',@fread($fp,4));
        $index=@fread($fp,$offset['len']-4);
    }elseif($fp==FALSE){
        return  '- Invalid IP data file';
    }
    $length=$offset['len']-1028;
    $start =@unpack('Vlen',$index[$ipdot[0]*4].$index[$ipdot[0]*4+1].$index[$ipdot[0]*4+2].$index[$ipdot[0]*4+3]);
    for ($start=$start[&#39;len&#39;]*8+1024;$start<$length;$start+=8){
        if ($index{$start}.$index{$start+1}.$index{$start+2}.$index{$start+3}>=$ip){
            $index_offset=@unpack(&#39;Vlen&#39;,$index{$start+4}.$index{$start+5}.$index{$start+6}."\x0");
            $index_length=@unpack(&#39;Clen&#39;,$index{$start+7});
            break;
        }
    }
    @fseek($fp,$offset[&#39;len&#39;]+$index_offset[&#39;len&#39;]-1024);
    if($index_length[&#39;len&#39;]){
        return &#39;- &#39;.@fread($fp,$index_length[&#39;len&#39;]);
    }else{
        return &#39;- Unknown&#39;;
    }
}

func convertip_full

function convertip_full($ip,$ipdatafile){
    if(!$fd=@fopen($ipdatafile,'rb')){
        return '- Invalid IP data file';
    }
    $ip=explode('.',$ip);
    $ipNum=$ip[0]*16777216+$ip[1]*65536+$ip[2]*256+$ip[3];
    if(!($DataBegin=fread($fd,4))||!($DataEnd=fread($fd,4))) return;
    @$ipbegin=implode('',unpack('L',$DataBegin));
    if($ipbegin<0) $ipbegin+=pow(2,32);
    @$ipend=implode(&#39;&#39;,unpack(&#39;L&#39;,$DataEnd));
    if($ipend<0) $ipend+=pow(2,32);
    $ipAllNum=($ipend-$ipbegin)/7+1;
    $BeginNum=$ip2num=$ip1num=0;
    $ipAddr1=$ipAddr2=&#39;&#39;;
    $EndNum=$ipAllNum;
    while($ip1num>$ipNum||$ip2num<$ipNum){
        $Middle= intval(($EndNum+$BeginNum)/2);
        fseek($fd,$ipbegin+7*$Middle);
        $ipData1=fread($fd,4);
        if(strlen($ipData1)<4){
        fclose($fd);
            return &#39;- System Error&#39;;
        }
        $ip1num=implode(&#39;&#39;,unpack(&#39;L&#39;,$ipData1));
        if($ip1num<0) $ip1num+=pow(2,32);
        if($ip1num>$ipNum){
            $EndNum=$Middle;
            continue;
        }
        $DataSeek=fread($fd,3);
        if(strlen($DataSeek)<3){
            fclose($fd);
            return &#39;- System Error&#39;;
        }
        $DataSeek=implode(&#39;&#39;,unpack(&#39;L&#39;,$DataSeek.chr(0)));
        fseek($fd,$DataSeek);
        $ipData2=fread($fd,4);
        if(strlen($ipData2)<4){
            fclose($fd);
            return &#39;- System Error&#39;;
        }
        $ip2num=implode(&#39;&#39;,unpack(&#39;L&#39;,$ipData2));
        if($ip2num<0) $ip2num+=pow(2,32);
        if($ip2num<$ipNum){
            if($Middle==$BeginNum){
                fclose($fd);
                return &#39;- Unknown&#39;;
            }
            $BeginNum=$Middle;
        }
    }
    $ipFlag=fread($fd,1);
    if($ipFlag==chr(1)){
        $ipSeek=fread($fd,3);
        if(strlen($ipSeek)<3){
            fclose($fd);
            return &#39;- System Error&#39;;
        }
        $ipSeek=implode(&#39;&#39;,unpack(&#39;L&#39;,$ipSeek.chr(0)));
        fseek($fd,$ipSeek);
        $ipFlag=fread($fd,1);
    }
    if($ipFlag==chr(2)){
        $AddrSeek=fread($fd,3);
        if(strlen($AddrSeek)<3){
            fclose($fd);
            return &#39;- System Error&#39;;
        }
        $ipFlag=fread($fd,1);
        if($ipFlag==chr(2)){
            $AddrSeek2=fread($fd,3);
            if(strlen($AddrSeek2)<3){
                fclose($fd);
                return &#39;- System Error&#39;;
            }
            $AddrSeek2=implode(&#39;&#39;,unpack(&#39;L&#39;,$AddrSeek2.chr(0)));
            fseek($fd,$AddrSeek2);
        }else{
            fseek($fd,-1,SEEK_CUR);
        }
        while(($char=fread($fd,1)) != chr(0))
        $ipAddr2 .= $char;
        $AddrSeek=implode(&#39;&#39;,unpack(&#39;L&#39;,$AddrSeek.chr(0)));
        fseek($fd,$AddrSeek);
        while(($char=fread($fd,1)) != chr(0))
        $ipAddr1 .= $char;
    }else{
    fseek($fd,-1,SEEK_CUR);
    while(($char=fread($fd,1)) != chr(0))
    $ipAddr1 .= $char;
    $ipFlag=fread($fd,1);
    if($ipFlag==chr(2)){
        $AddrSeek2=fread($fd,3);
        if(strlen($AddrSeek2)<3){
            fclose($fd);
            return &#39;- System Error&#39;;
        }
        $AddrSeek2=implode(&#39;&#39;,unpack(&#39;L&#39;,$AddrSeek2.chr(0)));
        fseek($fd,$AddrSeek2);
    }else{
        fseek($fd,-1,SEEK_CUR);
    }
    while(($char=fread($fd,1)) != chr(0))
        $ipAddr2 .= $char;
    }
    fclose($fd);
    if(preg_match(&#39;/http/i&#39;,$ipAddr2)){
        $ipAddr2=&#39;&#39;;
    }
    $ipaddr="$ipAddr1 $ipAddr2";
    $ipaddr=preg_replace(&#39;/CZ88\.NET/is&#39;,&#39;&#39;,$ipaddr);
    $ipaddr=preg_replace(&#39;/^\s*/is&#39;,&#39;&#39;,$ipaddr);
    $ipaddr=preg_replace(&#39;/\s*$/is&#39;,&#39;&#39;,$ipaddr);
    if(preg_match(&#39;/http/i&#39;,$ipaddr)||$ipaddr==&#39;&#39;){
        $ipaddr=&#39;- Unknown&#39;;
    }
    return &#39;- &#39;.$ipaddr;
}

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