</pre><pre name="code" class="php"><?php

//獲取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地址合法驗證
    $long = sprintf("%u",ip2long($ip));
    $ip   = $long ? array($ip, $long) : array('0.0.0.0', 0);
    return $ip[$type];
}

//獲取客戶端瀏覽器
function get_client_browser(){
	$sys = $_SERVER['HTTP_USER_AGENT'];  //獲取使用者代理字串
	if (stripos($sys, "Firefox/") > 0) {
		preg_match("/Firefox\/([^;)]+)+/i", $sys, $b);
		$exp[0] = "Firefox";
		$exp[1] = $b[1];  //獲取火狐瀏覽器的版本號
	} elseif (stripos($sys, "Maxthon") > 0) {
		preg_match("/Maxthon\/([\d\.]+)/", $sys, $aoyou);
		$exp[0] = "傲遊";
		$exp[1] = $aoyou[1];
	} elseif (stripos($sys, "MSIE") > 0) {
		preg_match("/MSIE\s+([^;)]+)+/i", $sys, $ie);
		$exp[0] = "IE";
		$exp[1] = $ie[1];  //獲取IE的版本號
	} elseif (stripos($sys, "OPR") > 0) {
		preg_match("/OPR\/([\d\.]+)/", $sys, $opera);
		$exp[0] = "Opera";
		$exp[1] = $opera[1];  
	} elseif(stripos($sys, "Edge") > 0) {
		//win10 Edge瀏覽器 添加了chrome核心標記 在判斷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] = $google[1];  //獲取google chrome的版本號
	} elseif(stripos($sys,'rv:')>0 && stripos($sys,'Gecko')>0){
		preg_match("/rv:([\d\.]+)/", $sys, $IE);
		$exp[0] = "IE";
		$exp[1] = $IE[1];
	}else {
		$exp[0] = "未知瀏覽器";
		$exp[1] = ""; 
	}
	return $exp;
}

//獲取客戶端作業系統
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';#新增win10判斷
	}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 = '未知作業系統';
	}
	return $os;	
}

header ( 'Content-Type: text/html; charset=utf-8' );
$client_ip = get_client_ip();
$client_browser = get_client_browser();
$client_os = get_client_os();
echo '客戶端IP:',$client_ip,'<br>';
echo '客戶端瀏覽器:',$client_browser[0],'<br>';
echo '客戶端瀏覽器版本:',$client_browser[1],'<br>';
echo '客戶端作業系統:',$client_os,'<br>';

?>