PHP. XPath. Call to str_replace() cause an 'unterminated entity' error.
$html = '<a href="/browse/product.do?cid=1&vid=1&pid=1" class="productItemName">what is going on here</a>';

$dom = new DOMDocument();
$dom->loadhtml($html);
$xpath = new DOMXPath($dom);

$selectors['link'] = '//a/@href';
$links_nodeList = $xpath->query($selectors['link']);

foreach ($links_nodeList as $link) {
    $link->nodeValue = str_replace("http://www.test.com",'',$link->nodeValue); // relativize link
    $links[] = $link->nodeValue;
}

echo("<p>links</p>");
echo("<pre>");
print_r($links);
echo("</pre>");

Warning: main() [function.main]: unterminated entity reference vid=1&pid=1 in C:Usersdirpublic_htmlwhatisgoingon.php on line 14
links

Array
(
    [0] => /browse/product.do?cid=1
)

$link->nodeValue = str_replace("http://www.test.com",'',$link->nodeValue);

foreach ($links_nodeList as $link) {
    $link->nodeValue = str_replace("http://www.test.com",'',htmlspecialchars($link->nodeValue)); // relativize link
    $links[] = htmlspecialchars($link->nodeValue, ENT_QUOTES, 'UTF-8');
}

Array
(
    [0] => /browse/product.do?cid=1&vid=1&pid=1
)