$username="username";
$password="password";
$database="your_database";

mysql_connect(localhost,$username,$password);
@mysql_select_db($database) or die( "Unable to select database");

$query  = "SELECT user_lastlogin, user_login FROM pligg_users LIMIT {$limit_size}";
$result = mysql_query($query);

while($row = mysql_fetch_array($result, MYSQL_ASSOC))
{
    echo "Name :{$row['user_login']} " .
         "- {$row['user_lastlogin']} <br>";
}

mysql_close();