Shulou(Shulou.com)06/03 Report--

This article introduces the knowledge of "how to use php to convert ip addresses into real address codes". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Php translates ip addresses into real addresses: 1. Create a PHP example file; 2. Use the "define ('WEB_ROOT',dirname (_ _ FILE__)); echo convertip (' ip','full');" method to achieve the translation.

This article operating environment: windows7 system, PHP7.1 version, DELL G3 computer

The method of translating IP address into Real address by php

An example of using the method is as follows

Define ('WEB_ROOT',dirname (_ _ FILE__)); echo convertip (' 111.63.244.69)

Func convertip

Function convertip ($ip,$integrity='simple') {$return=''; $integrity=in_array ($integrity,array ('simple','full'))? $integrity:'simple'; if (preg_match ("/ ^\ d {1 ip 3}\.\ d {1 iparray=explode 3} $/", $ip)) If ($iparray [0] = = 10 | $iparray [0] = = 127th | ($iparray [0] = = 192&&$iparray [1] = = 168) | ($iparray [0] = = 172iparray & ($iparray [1] > = 16&&$iparray [1] 255 | | $iparray [1] > 255 | $iparray [2] > 255 | $iparray [3] > 255) {$return='- Invalid IP Address';} else {$tinyipfile=WEB_ROOT.'./tinyipdata.dat') / / IP== address packet Lite Edition $fullipfile=WEB_ROOT.'./wry.dat';//IP== address packet complete full page if ($integrity=='simple'&&@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); $ip=pack ('naughty journal ip2long ($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] * 413]. $index [$ipdot [0] * 4 * 2]. $index [$ipdot [0] * 418]); for ($start=$start ['len'] * 8mm 1024) $start=$ip) {$index_offset=@unpack ('Vlen',$index {$start+4}. $index {$start+5}. $index {$start+6}. "\ x0"); $index_length=@unpack (' Clen',$index {$start+7}); break;}} @ fseek ($fp,$offset ['len'] + $index_offset [' len']-1024) If ($index_length ['len']) {return' -'. @ fread ($fp,$index_length ['len']);} else {return'-Unknown';}}

Func convertip_full

Function convertip_full ($ip,$ipdatafile) {if (! $fd=@fopen ($ipdatafile,'rb')) {return'- Invalid IP datafile';} $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

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.