User Agent String Decipher...

[henryrhenryr]

Hi

I am trying to write a function to decode / decipher the user agent string. I've got so far but I wondered if anyone knows any quick ways to do this or any useful resources to help me finish. I have tried searching to little avail.

Here's my present code:

 
function decipher_agent($in) {
    $out['string']=$in;
    if ($l= strpos(' '.$in,'MSIE')) {
      $out['browser']='IE';
      $l=$l+5;
      $f=$l+3;
      $out['version']=substr(' '.$in,$l,$f);
    }
    elseif ($l= strpos(' '.$in,'Firefox')) {
      $out['browser']='FireFox';
      if ($t= strpos(substr($in,$l),'2.')) {
        $out['version']='2';
      }
      elseif ($t= strpos(substr($in,$l),'1.')) {
        $out['version']='1';
      }
    }
    if ($l= strpos(' '.$in,'Windows')) {
      $out['os']='Windows';
      $t= substr($in,$l);
      if (strpos(' '.$t,'6')) {
        $out['version']='Vista';
      }
      elseif (strpos(' '.$t,'5')) {
        $out['version']='XP';
      }
      elseif (strpos(' '.$t,'4')) {
        $out['version']='2K';
      }
      else {
        $out['version']=substr($t,8,11);
      }
    }
    elseif ($l= strpos(' '.$in,'Mac')) {
      $out['os']='Mac';
      if (strpos(' '.$in,'OS X')) {
        $out['version']='OS X';
      }
      else {
        $out['version']=null;
      }
    }
    elseif ($l= strpos(' '.$in,'Linux')) {
      $out['os']='Linux';
      $out['version']=null;
    }
    else {
      $out['os']='Unknown OS';
    }
    return $out;
}
 

Not so pretty ;) Any pointers much appreciated.

Henry

[nitinpatel1117]

Your code is already quite short in achieving this task.

But these may help a bit.

http://www.dotvoid.com/view.php?id=68
http://www.texsoft.it/index.php?c=so...useragent&l=it