Why does this BASIC XML code work on MAMP but not on my Fedora server????

[jonblockx]

$contents = '<?xml version="1.0"?>
<rss>
<link>http://www.example.com/test?a=&amp;b=&amp;</link>
</rss>
';	
$parser = xml_parser_create('');
xml_parse_into_struct($parser, trim($contents), $xml_values);
print_r($xml_values[1]['value']);

Locally on my Mac MAMP (PHP Version 5.2.6) I get:

http://www.example.com/test?a=&b=&

However, in my Fedora (PHP Version 5.2.6) production server, I get:

http://www.example.com/test?a=b=

Where are my ampersands??? How do I make them appear on my Fedora server?

Help!
Thank you,
Jon

[djjjozsi]

on my servers the output is:
http://www.example.com/test?a=&b=&

if you see the source code you got the proper link you're waiting?
try to print that with htmlspecialchars($link);

[jonblockx]

Let me try to be more clear... I need the ampersand characters to appear in the output. Can someone please help me understand as to why the ampersand characters do not display on my fedora server?