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Anonymous
3 years ago
loadHTML() & loadHTMLFile() may always generate warnings if the html include some tags such as "nav, section, footer, etc" adopted as of HTML5 (in PHP 8.1.6).

Try to run below.

<?php

$file_name
= 'PHP Runtime Configuration - Manual.html'; // Download this file from "https://www.php.net/manual/en/session.configuration.php" in advance.

$doc = new DOMDocument();
$doc->loadHTMLFile($file_name); // if set "LIBXML_NOERROR" as 2nd arg, no error
echo $doc->saveHTML();

// Warning: DOMDocument::loadHTMLFile(): Tag nav invalid in PHP Runtime Configuration - Manual.html, line: 63 in D:\xampp\htdocs\test\xml(dom)\loadHTML\index.php on line 6

?>

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