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I'm attempting to parse HTML code with DOMDocument, do stuff like changes to it, then assemble it back to a string which I send to the output.
But there a few issues regarding parsing, meaning that what I send to DOMDocument does not always come back in the same form :)
Here's a list:
using ->loadHTML:
preserveWhitespace and formatOutput settings (loosing whitespaces on preformatted text)<header>, <footer> etc. But they can be supressed, so I can live with this.<link ... /> element (with a self-closing tag), after parsing/saveHTML the output will be <link .. > using ->loadXML:
> from <style> or <script> tags: body > div becomes body > div <meta ... /> becomes <meta...></meta>; but this can be fixed with an regex.I didn't try HTML5lib but I'd prefer DOMDocument instead of a custom parser for performance reasons
So like the Honeymonster mentioned using CDATA fixes the main problem with loadXML.
Is there any way I could prevent self closing of all empty HTML tags besides a certain set, without using regex?
Right now I have:
$html = $dom->saveXML($node); $html = preg_replace_callback('#<(\w+)([^>]*)\s*/>#s', function($matches){ // ignore only these tags $xhtml_tags = array('br', 'hr', 'input', 'frame', 'img', 'area', 'link', 'col', 'base', 'basefont', 'param' ,'meta'); // if a element that is not in the above list is empty, // it should close like `<element></element>` (for eg. empty `<title>`) return in_array($matches[1], $xhtml_tags) ? "<{$matches[1]}{$matches[2]} />" : "<{$matches[1]}{$matches[2]}></{$matches[1]}>"; }, $html); which works but it will also do the replacements in the CDATA content, which I don't want...
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PHP | DOMDocument getElementsByTagName() Function The DOMDocument::getElementsByTagName() function is an inbuilt function in PHP which is used to return a new instance of class DOMNodeList which contains all the elements of local tag name.
A DomDocument is a container (variable/object) for holding an XML document in your VBA code. Just as you use a String variable to hold a strings value, you can use a DomDocument to hold an XML document. (for a complete list of a DomDocuments properties, see halfway down this page)
DOMDocument::loadHTMLThe function parses the HTML contained in the string source . Unlike loading XML, HTML does not have to be well-formed to load. This function may also be called statically to load and create a DOMDocument object.
Use html5lib. It can parse html5 and produce a DOMDocument. Example:
require_once '/path/to/HTML5/Parser.php'; $dom = HTML5_Parser::parse('<html><body>...'); Documentation
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