PHPがブラウザを決定する

//判断类型   <?phpif(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE 8.0"))  echo "Internet Explorer 8.0";  else if(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE 7.0"))  echo "Internet Explorer 7.0";  else if(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE 6.0"))  echo "Internet Explorer 6.0";  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Firefox/3"))  echo "Firefox 3";  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Firefox/2"))  echo "Firefox 2";  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Chrome"))  echo "Google Chrome";  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Safari"))  echo "Safari";  else if(strpos($_SERVER["HTTP_USER_AGENT"],"Opera"))  echo "Opera";  else echo $_SERVER["HTTP_USER_AGENT"];  ?>

判断言語

<?php$lang = substr($_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。  if (preg_match("/zh-c/i", $lang))  echo "简体中文";  else if (preg_match("/zh/i", $lang))  echo "繁?中文";  else if (preg_match("/en/i", $lang))  echo "English";  else if (preg_match("/fr/i", $lang))  echo "French";  else if (preg_match("/de/i", $lang))  echo "German";  else if (preg_match("/jp/i", $lang))  echo "Japanese";  else if (preg_match("/ko/i", $lang))  echo "Korean";  else if (preg_match("/es/i", $lang))  echo "Spanish";  else if (preg_match("/sv/i", $lang))  echo "Swedish";  else echo $_SERVER["HTTP_ACCEPT_LANGUAGE"];  ?>