3. $id;
$db_host="localhost";
$db_user="root";
$db_pass="root";
$link = mysql_connect($db_host, $db_user,
$db_pass) or die ("Error conectando a la base de datos.");
$dbname="prueba";
$tablename="users";
$query="SELECT * FROM $tablename where id =
$id;";
$result=mysql_db_query ($dbname, $query, $link);
