s20s

$agent=getenv("HTTP_USER_AGENT"); 

if(strstr($agent,'Google')||strstr($agent,'Yandex')||strstr($agent,'Rambler')){

$host = gethostbyaddr($_SERVER['REMOTE_ADDR']);

$date=date("Y-m-d H:i:s");

$page=getenv("REQUEST_URI");

$a=getenv("HTTP_HOST");

mysql_query("INSERT INTO table VALUES ('', '$date', '$host', '$agent','$page','$a')");

}