1 <?php echo $_SERVER["HTTP_USER_AGENT"]; ?>

1 <?php echo $_SERVER["HTTP_ACCEPT_LANGUAGE"]; ?>

 1 <?php
 2  if(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE 8.0″)) 
 3   echo "Internet Explorer 8.0″; 
 4  else if(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE 7.0″)) 
 5   echo "Internet Explorer 7.0″; 
 6  else if(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE 6.0″)) 
 7   echo "Internet Explorer 6.0″;
 8  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Firefox/3″))
 9   echo "Firefox 3″;
10  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Firefox/2″))
11   echo "Firefox 2″;
12  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Chrome"))
13   echo "Google Chrome";
14  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Safari"))
15   echo "Safari";
16  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Opera"))
17   echo "Opera";
18  else echo $_SERVER["HTTP_USER_AGENT"]; 
19  ?>

 1 <?php
 2  $lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 4); //只取前4位，这样只判断最优先的语言。如果取前5位，可能出现en,zh的情况，影响判断。
 3 if (preg_match("/zh-c/i", $lang)) 
 4   echo "简体中文"; 
 5 else if (preg_match("/zh/i", $lang)) 
 6   echo "繁體中文"; 
 7 else if (preg_match("/en/i", $lang)) 
 8   echo "English"; 
 9 else if (preg_match("/fr/i", $lang)) 
10   echo "French"; 
11 else if (preg_match("/de/i", $lang)) 
12   echo "German"; 
13 else if (preg_match("/jp/i", $lang)) 
14   echo "Japanese"; 
15 else if (preg_match("/ko/i", $lang)) 
16   echo "Korean"; 
17 else if (preg_match("/es/i", $lang)) 
18   echo "Spanish"; 
19 else if (preg_match("/sv/i", $lang)) 
20   echo "Swedish"; 
21 else echo $_SERVER["HTTP_ACCEPT_LANGUAGE"];
22 ?>