utfwry. Dat PHP, about ThinkPHP's method of IP location using utfwry address Library

stay WEB Application , according to IP Address location and logging are also very common requirements , stay ThinkPHP You can easily achieve IP Address acquisition and location

It can be downloaded from the official website IP Locate the extended class library , Or the extension class is already included in the download extension package . If it is an uploaded class library downloaded separately , Take the decompressed IpLocation.class.php Put in ThinkPHP/Extend/Library/ORG/Net/( If not, please manually create ) Below directory .

One 、 obtain IP Address

If you only need to get user access IP Address , Then directly use the built-in get_client_ip Function , The function is ThinkPHP Standard mode built-in method , You can use it directly , Than PHP Built in system variables $_SERVER['HTTP_CLIENT_IP'] Better compatibility , usage ：$ip = get_client_ip();

get_client_ip Support IP Address detection and legitimacy verification , The return value is obtained IP Address , If I get it IP Illegal address , Will return 0.0.0.0.

if necessary , You can also return IPV4 Address number , for example ：$ip = get_client_ip(1);

The result returned may be similar to ：2130706433

It can be used for address range and comparison .

Two 、IP Address location

Just get IP Address can not fully meet the needs of applications , It can only be recorded for future log analysis ,IP The address location function allows you to get the user's area . To use IP Positioning function , Except for the need to IpLocation Beyond the extended class library , It also needs to be IP Address library file , because ThinkPHP By default UTF8 code , So it's better to UTF8 Format IP Address library file , If it is pure gbk Coded IP Address library file , You need to encode and convert the obtained results ( As we'll see )

Unzipped address library file UTFWry.dat Put in IpLocation Under the directory where the extension class library is located .

Usage method ：import('ORG.Net.IpLocation');// Import IpLocation class

$Ip = new IpLocation(); // Instantiate the class

$location = $Ip->getlocation('218.79.93.194'); // Get a IP The location of the address

Back to location Variable is an array , Include ：$location['ip'] // IP Address

$location['beginip'] // user IP The starting address of the range

$location['endip'] // user IP The end address of the range

$location['country'] // Country or region

$location['area'] // Area

Usually , We want to get IP Positioning words , Just take country and area Information ：$info = $location['country'].$location['area'];

If you use it IP The address library file is not UTFWry.dat( Pay attention to Linux The case of the following file names also needs to be consistent ) Words , We need to instantiate IpLocation Class, pass in the address library file name , for example ：$Ip = new IpLocation('MyIpWry.dat'); // Pass in IP Address library file name

If your IP Address library is GBK Code words , You need to encode and convert the returned results . for example ：$info = iconv('gbk','utf-8',$location['country'].$location['area']);

If the getlocation Method without passing any parameters , The system will automatically call the above get_client_ip Function to get the current IP Address ：$location = $Ip->getlocation();

You can also support the incoming domain name to automatically obtain ip Address import('ORG.Net.IpLocation');// Import IpLocation class

$Ip = new IpLocation(); // Instantiate the class

$area = $Ip->getlocation('www.thinkphp.cn'); // Get the location of the domain name server

dump($area);

Run result output ：

If you use innocence IP Address base , Or you often need to change different address libraries , For convenience IP Locate the query , You can also package a function separately to obtain location information .

The above is the whole content of this paper , I hope it will be helpful for your study , For more information, please pay attention to PHP Chinese net ！

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