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Bug #20639 DomElement->get_elements_by_tagname() doesn't work
Submitted: 2002-11-26 02:34 UTC Modified: 2002-11-26 09:41 UTC
From: chris at improbable dot org Assigned:
Status: Closed Package: DOM XML related
PHP Version: 4CVS-2002-11-26 (stable) OS: Mac OS X 10.2.2
Private report: No CVE-ID: None
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From: chris at improbable dot org
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 [2002-11-26 02:34 UTC] chris at improbable dot org 
It looks like DomElement->get_elements_by_tagname() should work like DomDocument->get_elements_by_tagname() but returns nothing:
<?php

	header("Content-Type: text/plain");
	
$src = <<< _END
<html>
<head><title> Test </title></head>
<body> 
<h1>Test</h1>
<ul>
<li>foo</li>
<li>bar</li>
</ul>
</body>
</html>
_END;

$doc = domxml_open_mem($src);

$n = $doc->get_elements_by_tagname("li");
print get_class($doc) . "->get_elements_by_tagname:\n";
print_r($n);

$ctx = $doc->xpath_new_context();

$Bodies = $doc->get_elements_by_tagname("body");
foreach ($Bodies as $Body) {
	print get_class($Body) . "->get_elements_by_tagname:\n";
	print_r($Body->get_elements_by_tagname("li"));
	
	$xp = getXPath($Body) . "/*/li";
	print get_class($ctx) . " xpath ($xp):\n";
	$res = $ctx->xpath_eval($xp);
	print_r($res->nodeset);

}

function getXPath($node) {
	/* node id is held in a property named '1', this is
	illegal in php so we use a workaround */
	$one = '1';
	$xpath = '';
	while ($parent = $node->parent_node()) {
		$siblings = $parent->child_nodes();
		$index = 1;
		foreach ($siblings as $sibling) {
			if ($sibling->type != XML_ELEMENT_NODE || $sibling->tagname != $node->tagname) continue;
				if ($sibling->$one == $node->$one) {
					$xpath = '/' . $node->tagname . '[' . $index . ']' . $xpath;
					break;
				}
			$index++;
		}
		$node = $parent;
	}

	return $xpath;
}

?>

returns 
domdocument->get_elements_by_tagname:
Array
(
    [0] => domelement Object
        (
            [type] => 1
            [tagname] => li
            [0] => 3
            [1] => 1985152
        )

    [1] => domelement Object
        (
            [type] => 1
            [tagname] => li
            [0] => 4
            [1] => 2523424
        )

)
domelement->get_elements_by_tagname:
Array
(
)
XPathContext xpath (/html[1]/body[1]/*/li):
Array
(
    [0] => domelement Object
        (
            [type] => 1
            [tagname] => li
            [0] => 3
            [1] => 1985152
        )

    [1] => domelement Object
        (
            [type] => 1
            [tagname] => li
            [0] => 4
            [1] => 2523424
        )

)

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AllCommentsChangesGit/SVN commitsRelated reports
 [2002-11-26 09:41 UTC] chregu@php.net 
This bug has been fixed in CVS.

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every three hours; this change will be in the next snapshot. You can
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