php DOMDocument->getElementById->nodeValue sripping html
I am using php's DOMDocument->getElementById->nodeValue to set a particular DOM element's HTML. The problem is that the string is converted to HTML entities:
eg:
nodeValue = html_entity_decode('<b>test</b>'); should output 'test' but instead it outputs '<b>test</b>'
Any ideas why? This happens even if i don't use the html_entity_decode function
Here is my updated script...which is NOW working:
// Construct a DOM object for updating the affected node
$html = new DOMDocument("1.0", "utf-8");
if (!$html) return FALSE;
// Load the HTML file in question
$loaded = $html->loadHTMLFile($data['page_path']);
if (!$loaded)
{
print 'Failed to load file';
return FALSE;
}
// Establish the node being updated within the file
foreach ($data['divids'] as $divid)
{
$element = $html->getElementById($divid);
if (is_null($element))
{
print 'Failed to get existing element';
return FALSE;
}
$newelement = $html->createElement('div');
if (is_null($newelement))
{
print 'Failed to create new ele开发者_开发问答ment';
return FALSE;
}
$newelement->setAttribute('id', $divid);
$newelement->setAttribute('class', 'reusable-block');
// Perform the replacement
$newelement->nodeValue = $replacement;
$parent = $element->parentNode;
$parent->replaceChild($newelement, $element);
// Save the file back to its location
$saved = $html->saveHTMLFile($data['page_path']);
if (!$saved)
{
print 'Failed to save file';
return FALSE;
}
}
// Replace HTML entities left over
$content = files::readFile($data['page_path']);
$content = str_replace('<', '<', $content);
$content = str_replace('>', '>', $content);
if (!@fwrite($handle, $content))
{
print 'Failed to replace entities';
return FALSE;
}
This is proper behavior - your tag is being converted to a string, and strings in XML can't contain angle brackets (only tags can). Try converting the HTML into a DOMNode and appending it instead:
$node = $mydoc->createElement("b");
$node->nodeValue = "test";
$mydoc->getElementById("whatever")->appendChild($node);
Update with working example:
$html = '<html>
<body id="myBody">
<b id="myBTag">my old element</b>
</body>
</html>';
$mydoc = new DOMDocument("1.0", "utf-8");
$mydoc->loadXML($html);
// need to do this to get getElementById() to work
$all_tags = $mydoc->documentElement->getElementsByTagName("*");
foreach ($all_tags as $element) {
$element->setIdAttribute("id", true);
}
$current_b_tag = $mydoc->getElementById("myBTag");
$new_b_tag = $mydoc->createElement("b");
$new_b_tag->nodeValue = "my new element";
$result = $mydoc->getElementById("myBody");
$result->replaceChild($new_b_tag, $current_b_tag);
echo $mydoc->saveXML($mydoc->documentElement);
加载中,请稍侯......
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