php如何获取客户端信息

用于获取用户客户端信息（推荐学习：PHP视频教程）

<?php

class userPCInfo{
//获取客户端浏览器
public static 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
public static 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 $os;
}
//获取ip地址
public static function get_ip() {
    //判断服务器是否允许$_SERVER
    if (isset($_SERVER)) {
        if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $realip = $_SERVER['HTTP_X_FORWARDED_FOR'];
        } elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
            $realip = $_SERVER['HTTP_CLIENT_IP'];
        } else {
            $realip = $_SERVER['REMOTE_ADDR'];
        }
    } else {
        //不允许就使用getenv获取
        if (getenv("HTTP_X_FORWARDED_FOR")) {
            $realip = getenv("HTTP_X_FORWARDED_FOR");
        } elseif (getenv("HTTP_CLIENT_IP")) {
            $realip = getenv("HTTP_CLIENT_IP");
        } else {
            $realip = getenv("REMOTE_ADDR");
        }
    }
    return $realip;
}
//获取当前ip所在城市
public static function GetIpLookup($ip = ''){
    if(empty($ip)){
        return '请输入IP地址';
    }
    $test= 'http://ip.taobao.com/service/getIpInfo.php?ip='.$ip;
    $res = @file_get_contents($test);
    return $res;
}
}

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