PHP language, browser, operating system, IP address, geographic location, ISP

: This article describes the PHP language, browser, operating system, IP address, geographic location, and ISP. if you are interested in the PHP Tutorial, refer to it.

 $ Obj = new class_guest_info;
$ Obj-> GetLang (); // Obtain the visitor's language: Simplified Chinese, Traditional Chinese, and English.
$ Obj-> GetBrowser (); // Obtain the visitor's browsers: MSIE, Firefox, Chrome, Safari, Opera, and Other.
$ Obj-> GetOS (); // Obtain guest operating systems: Windows, MAC, Linux, Unix, BSD, and Other.
$ Obj-> GetIP (); // Obtain the visitor's IP address.
$ Obj-> GetAdd (); // Obtain the geographical location of a visitor. use the Baidu hidden interface.
$ Obj-> GetIsp (); // Obtain the visitor's ISP and use the Baidu hidden interface.
Class class_guest_info
{
Function GetLang ()
{
$ Lang = substr ($ _ SERVER ['http _ ACCEPT_LANGUAGE '], 0, 4 );
// Use substr () to intercept a string, starting from 0 to 4 characters.
If (preg_match ('/zh-c/I', $ Lang )){
// Preg_match () regular expression matching function
$ Lang = 'Simplified Chinese ';
} Elseif (preg_match ('/zh/I', $ Lang )){
$ Lang = 'traditional Chinese ';
} Else {
$ Lang = 'English ';
}
Return $ Lang;
}
Function GetBrowser ()
{
$ Browser = $ _ SERVER ['http _ USER_AGENT '];
If (preg_match ('/MSIE/I', $ Browser )){
$ Browser = 'msi ';
} Elseif (preg_match ('/Firefox/I', $ Browser )){
$ Browser = 'Firefox ';
} Elseif (preg_match ('/Chrome/I', $ Browser )){
$ Browser = 'chromi ';
} Elseif (preg_match ('/Safari/I', $ Browser )){
$ Browser = 'Safari ';
} Elseif (preg_match ('/Opera/I', $ Browser )){
$ Browser = 'Opera ';
} Else {
$ Browser = 'other ';
}
Return $ Browser;
}
Function GetOS ()
{
$ OS = $ _ SERVER ['http _ USER_AGENT '];
If (preg_match ('/win/I', $ OS )){
$ OS = 'windows ';
} Elseif (preg_match ('/mac/I', $ OS )){
$ OS = 'Mac ';
} Elseif (preg_match ('/linux/I', $ OS )){
$ OS = 'Linux ';
} Elseif (preg_match ('/unix/I', $ OS )){
$ OS = 'unix ';
} Elseif (preg_match ('/bsd/I', $ OS )){
$ OS = 'bsd ';
} Else {
$ OS = 'other ';
}
Return $ OS;
}
Function GetIP ()
{
If (! Emptyempty ($ _ SERVER ['http _ CLIENT_IP ']) {
// If the variable is not null or a non-zero value, empty () returns FALSE.
$ IP = explode (',', $ _ SERVER ['http _ CLIENT_IP ']);
} Elseif (! Emptyempty ($ _ SERVER ['http _ X_FORWARDED_FOR ']) {
$ IP = explode (',', $ _ SERVER ['http _ X_FORWARDED_FOR ']);
} Elseif (! Emptyempty ($ _ SERVER ['remote _ ADDR ']) {
$ IP = explode (',', $ _ SERVER ['remote _ ADDR ']);
} Else {
$ IP [0] = 'none ';
}
Return $ IP [0];
}
Private function GetAddIsp ()
{
$ IP = $ this-> GetIP ();
$ AddIsp = mb_convert_encoding (file_get_contents ('http: // open.baidu.com/ipsearch/stn?ipjson&wd='. $ IP), 'utf-8', 'gbk ');
// Mb_convert_encoding () converts character encoding.
If (preg_match ('/noresult/I', $ AddIsp )){
$ AddIsp = 'none ';
} Else {
$ Sta = stripos ($ AddIsp, $ IP) + strlen ('From ');
$ Len = stripos ($ AddIsp, '"}')-$ Sta;
$ AddIsp = substr ($ AddIsp, $ Sta, $ Len );
}
$ AddIsp = explode ('', $ AddIsp );
Return $ AddIsp;
}
Function GetAdd ()
{
$ Add = $ this-> GetAddIsp ();
Return $ Add [0];
}
Function GetIsp ()
{
$ Isp = $ this-> GetAddIsp ();
If ($ Isp [0]! = 'None' & isset ($ Isp [1]) {
$ Isp = $ Isp [1];
} Else {
$ Isp = 'none ';
}
Return $ Isp;
}
}

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