function browser ($pass_br) {
if (eregi("Opera", $pass_br)) { $browser = "Opera";
} else { $browser = "kitas";
}
return $browser;
}
$user_agent = $HTTP_SERVER_VARS["HTTP_USER_AGENT"];
$user_agent_abs_abs = browser ($user_agent);
if($user_agent_abs_abs == "Opera") {
echo "vali nx su savo opera";
} else {
echo "gali užeit";
}