How to Parse HTML5 with PHP DOMDocument and Handle Tag Errors?

Parsing HTML5 with PHP DOMDocument and Handling Tag Errors

DOMDocument is a convenient PHP tool for parsing HTML code. However, it may encounter errors while parsing HTML5 tags that are not supported by PHP 5.3. Examples include

and

.

To resolve this issue, you can attempt to parse the HTML as XML, but this may result in different parsing logic. If you require strict HTML5 parsing, the recommended approach is to disable error reporting with libxml_use_internal_errors:

<code class="php">$dom = new DOMDocument;
libxml_use_internal_errors(true);
$dom->loadHTML('...');</code>

Once the HTML is loaded, clear the errors to prevent them from interfering with further parsing:

<code class="php">libxml_clear_errors();</code>

This workaround allows you to parse HTML5 code in PHP while suppressing the warnings generated by the unrecognized tags.

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