PHP获取客户端IP地址、浏览器类型版本、操作系统

 "code" class="php">

 //获取IP地址
 function get_client_ip($type = 0,$adv=true) {
     $type = $type ? 1 : 0;
     static $ip = NULL;
     if ($ip!== NULL) return $ip[$type];
     if($adv){
         if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
             $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
             $pos = array_search('unknown',$arr);
             if(false !== $pos) unset($arr[$pos]);
             $ip = trim($arr[0]);
         }elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
             $ip = $_SERVER['HTTP_CLIENT_IP'];
         }elseif (isset($_SERVER['HTTP_X_REAL_IP'])) {
             $ip = $_SERVER['HTTP_X_REAL_IP'];
         }elseif (isset($_SERVER['REMOTE_ADDR'])) {
             $ip = $_SERVER['REMOTE_ADDR'];
         }
     }elseif (isset($_SERVER['REMOTE_ADDR'])) {
         $ip = $_SERVER['REMOTE_ADDR'];
     }
     // IP地址合法验证
     $long = sprintf("%u",ip2long($ip));
     $ip   = $long ? array($ip, $long) : array('0.0.0.0', 0);
     return $ip[$type];
 }

 //获取客户端浏览器
 function get_client_browser(){
     $sys = $_SERVER['HTTP_USER_AGENT'];  //获取用户代理字符串
     if (stripos($sys, "Firefox/") > 0) {
         preg_match("/Firefox\/([^;)]+)+/i", $sys, $b);
         $exp[0] = "Firefox";
         $exp[1] = $b[1];  //获取火狐浏览器的版本号
     } elseif (stripos($sys, "Maxthon") > 0) {
         preg_match("/Maxthon\/([\d\.]+)/", $sys, $aoyou);
         $exp[0] = "傲游";
         $exp[1] = $aoyou[1];
     } elseif (stripos($sys, "MSIE") > 0) {
         preg_match("/MSIE\s+([^;)]+)+/i", $sys, $ie);
         $exp[0] = "IE";
         $exp[1] = $ie[1];  //获取IE的版本号
     } elseif (stripos($sys, "OPR") > 0) {
         preg_match("/OPR\/([\d\.]+)/", $sys, $opera);
         $exp[0] = "Opera";
         $exp[1] = $opera[1];
     } elseif(stripos($sys, "Edge") > 0) {
         //win10 Edge浏览器 添加了chrome内核标记 在判断Chrome之前匹配
         preg_match("/Edge\/([\d\.]+)/", $sys, $Edge);
         $exp[0] = "Edge";
         $exp[1] = $Edge[1];
     } elseif (stripos($sys, "Chrome") > 0) {
         preg_match("/Chrome\/([\d\.]+)/", $sys, $google);
         $exp[0] = "Chrome";
         $exp[1] = $google[1];  //获取google chrome的版本号
     } elseif(stripos($sys,'rv:')>0 && stripos($sys,'Gecko')>0){
         preg_match("/rv:([\d\.]+)/", $sys, $IE);
         $exp[0] = "IE";
         $exp[1] = $IE[1];
     }else {
         $exp[0] = "未知浏览器";
         $exp[1] = "";
     }
     return $exp;
 }

 //获取客户端操作系统
 function get_client_os(){
     $agent = $_SERVER['HTTP_USER_AGENT'];
     $os = false;
     if (preg_match('/win/i', $agent) && strpos($agent, '95')){
         $os = 'Windows 95';
     }else if (preg_match('/win 9x/i', $agent) && strpos($agent, '4.90')){
         $os = 'Windows ME';
     }else if (preg_match('/win/i', $agent) && preg_match('/98/i', $agent)){
         $os = 'Windows 98';
     }else if (preg_match('/win/i', $agent) && preg_match('/nt 6.0/i', $agent)){
         $os = 'Windows Vista';
     }else if (preg_match('/win/i', $agent) && preg_match('/nt 6.1/i', $agent)){
         $os = 'Windows 7';
     }else if (preg_match('/win/i', $agent) && preg_match('/nt 6.2/i', $agent)){
         $os = 'Windows 8';
     }else if(preg_match('/win/i', $agent) && preg_match('/nt 10.0/i', $agent)){
         $os = 'Windows 10';#添加win10判断
     }else if (preg_match('/win/i', $agent) && preg_match('/nt 5.1/i', $agent)){
         $os = 'Windows XP';
     }else if (preg_match('/win/i', $agent) && preg_match('/nt 5/i', $agent)){
         $os = 'Windows 2000';
     }else if (preg_match('/win/i', $agent) && preg_match('/nt/i', $agent)){
         $os = 'Windows NT';
     }else if (preg_match('/win/i', $agent) && preg_match('/32/i', $agent)){
         $os = 'Windows 32';
     }else if (preg_match('/linux/i', $agent)){
         $os = 'Linux';
     }else if (preg_match('/unix/i', $agent)){
         $os = 'Unix';
     }else if (preg_match('/sun/i', $agent) && preg_match('/os/i', $agent)){
         $os = 'SunOS';
     }else if (preg_match('/ibm/i', $agent) && preg_match('/os/i', $agent)){
         $os = 'IBM OS/2';
     }else if (preg_match('/Mac/i', $agent) && preg_match('/PC/i', $agent)){
         $os = 'Macintosh';
     }else if (preg_match('/PowerPC/i', $agent)){
         $os = 'PowerPC';
     }else if (preg_match('/AIX/i', $agent)){
         $os = 'AIX';
     }else if (preg_match('/HPUX/i', $agent)){
         $os = 'HPUX';
     }else if (preg_match('/NetBSD/i', $agent)){
         $os = 'NetBSD';
     }else if (preg_match('/BSD/i', $agent)){
         $os = 'BSD';
     }else if (preg_match('/OSF1/i', $agent)){
         $os = 'OSF1';
     }else if (preg_match('/IRIX/i', $agent)){
         $os = 'IRIX';
     }else if (preg_match('/FreeBSD/i', $agent)){
         $os = 'FreeBSD';
     }else if (preg_match('/teleport/i', $agent)){
         $os = 'teleport';
     }else if (preg_match('/flashget/i', $agent)){
         $os = 'flashget';
     }else if (preg_match('/webzip/i', $agent)){
         $os = 'webzip';
     }else if (preg_match('/offline/i', $agent)){
         $os = 'offline';
     }else{
         $os = '未知操作系统';
     }
     return $os;
 }

 header ( 'Content-Type: text/html; charset=utf-8' );
 $client_ip = get_client_ip();
 $client_browser = get_client_browser();
 $client_os = get_client_os();
 echo '客户端IP:',$client_ip,'';
 echo '客户端浏览器:',$client_browser[0],'';
 echo '客户端浏览器版本:',$client_browser[1],'';
 echo '客户端操作系统:',$client_os,'';

 ?>