How PHP automatically jumps to Chinese and English pages

How PHP automatically jumps to the Chinese and English pages:

The code is as follows:

Print ("<meta  http-equiv= ' Refresh '  content =  ' 0; Url = gb/index.htm ' > ');    else   Print ("<meta http-equiv=" Refresh '  content =  ' 0; Url = eng/index.htm ' > ');    ? >   HTML Web page different automatic jump multilingual page According to the browser language of the visit   &NBSP Add the following code between   <script>   var type=navigator.appname   if  (type==) Netscape ")    var lang = navigator.language   else   var  lang = navigator.userlanguage   //cut down to first 2  chars of country code   var lang = lang.substr (0,2)    //  English    if  (lang ==  "en")    window.location.replace (' url ')    //  Simplified Chinese    else if  (lang ==   "ZH-CN")    window.location.replace (' url ')    //  Traditional Chinese    Else  if  (lang ==  "ZH-TW")    window.location.replace (' url ')    //   German    else if  (lang ==  "de")    Window.location.replace (' URL ')    //  except for the languages listed above    else   window.location.replace (' url ')   &NBSP </script>