How to use PHP to obtain guest IP and region location information and browser and source page instance sharing

How to use PHP to obtain guest IP and region location information and browser and source page instance sharing

<?php//this is similar to obtaining visitor information//convenient statistics class visitorinfo{//Get guest IP public Function getip () {$ip =false;        if (!empty ($_server["Http_client_ip")) {$ip = $_server["Http_client_ip"]; } if (!empty ($_server[' http_x_forwarded_for ')) {$ips = Explode (",", $_server[' http_x_forwarded_for ')            );            if ($IP) {array_unshift ($ips, $ip); $ip = FALSE;}                    for ($i = 0; $i < count ($ips); $i + +) {if (!eregi ("^ (10│172.16│192.168).", $ips [$i])) {                    $ip = $ips [$i];                Break    }}} return ($ip? $ip: $_server[' remote_addr '); }//Get city, network operator and other information according to IP public function Findcitybyip ($ip) {$data = file_get_contents (' Http://ip.taobao.com/ser        Vice/getipinfo.php?ip= '. $ip);    Return Json_decode ($data, $assoc =true);        }//Get user Browser type public function Getbrowser () {$agent =$_server["http_user_agent"]; if (Strpos ($agent, ' MSIE ')!==fAlse | |        Strpos ($agent, ' rv:11.0 '))//ie11 judgment return "ie";        else if (Strpos ($agent, ' Firefox ')!==false) return "Firefox";        else if (Strpos ($agent, ' Chrome ')!==false) return "Chrome";        else if (Strpos ($agent, ' opera ')!==false) return ' Opera ';        else if ((Strpos ($agent, ' Chrome ') ==false) &&strpos ($agent, ' Safari ')!==false) return ' Safari ';    else return ' unknown ';    }//Get site Source Public Function GetFromPage () {return $_server[' http_referer ']; } }