Problem with objects inside of a function

Hi,
I have this problem, here's the illustrative code

Defined classes (classes.php):

class spider {....}
class parser {....}

PHP:

Then there;s a function that uses these two classes

function foobar($var) {

include_once("classes.php");

$site = new spider();
$site->fetchPage("www.somesite.com?var=".$var);

$parser = new parser($site->html);

some work with parser functions ....



}

PHP:

Now if I call the function foobar once It works great, however if I call it twice or more, it doesn't work. Theres no error but the objects don't work, no output at all.

 

Try adding unset($site,$parser)