About BookmarkParser.php class

I am using BookmarkParser.php class and testBookmarkParser.php to test it
but when i run testBookmarkParser.php file to get IE bookmarks.
it will give me output as---

array
'scheme' => string 'https' (length=5)
'host' => string 'addons.mozilla.org' (length=18)
'path' => string '/en-US/firefox/bookmarks/' (length=25)

( ! ) Fatal error: Call to a member function read() on a non-object in

C:\wamp\www\bookmark\BookmarkParser.php on line 323



I tried to correct it but i cant do it..

why the read function cannot read the url..

and i want ans. of one more question
how can i parse/convert xml file returned by BookmarkParser.php by using php..

I am new to programming and i have to submit it soon..

plzzzzz reply soon... its urgent..


thanks in advance

- Trupti