How Can I Save HTML from DOMDocument Without the Wrapper Tags?

Saving HTML of DOMDocument Without HTML Wrapper

This question addresses a common issue when working with DOMDocument: extracting HTML content without the enclosing HTML, body, and paragraph tags. The problem arises when saveXML() appends these wrappers to the output. While the suggested fix using saveXML() on the first paragraph element only works for content without block-level elements, this article explores a comprehensive solution.

The key to resolving this issue lies in the introduction of the $option parameter in loadHTML() in PHP 5.4 and Libxml 2.6. By utilizing the following options:

$html->loadHTML($content, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);

we can instruct Libxml not to automatically add implied HTML and body elements or a default doctype. Consequently, saveHTML() will output the content without these wrappers.

LIBXML_HTML_NOIMPLIED turns off the automatic addition of implied HTML/body elements, while LIBXML_HTML_NODEFDTD prevents a default doctype from being added if one is not found in the input.

By incorporating these options, we can effectively extract the desired HTML content without unwanted wrappers, ensuring a more accurate representation of the DOMDocument's content.

It is important to note that loadHTML() requires Libxml 2.6, while LIBXML_HTML_NODEFDTD is only available in Libxml 2.7.8 and LIBXML_HTML_NOIMPLIED is available in Libxml 2.7.7. For a comprehensive understanding of Libxml parameters, refer to the official documentation.

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