Check
http://be.php.net/manual/en/function.get-browser.php
and the following code:
<?php
function list_array ($array) {
while (list ($key, $value) = each ($array)) {
$str .= "
$key: $value
\n";
}
return $str;
}
echo "$HTTP_USER_AGENT<hr>\n";
$browser = get_browser();
echo list_array ((array) $browser);
?>
bye, zara