(PHP 5, PHP 7)
DOMDocument::saveHTML — Dumps the internal document into a string using HTML formatting
public DOMDocument::saveHTML ([ DOMNode $node = NULL ] ) : string
Creates an HTML document from the DOM representation. This function is usually called after building a new dom document from scratch as in the example below.
node
Optional parameter to output a subset of the document.
Returns the HTML, or false if an error occurred.
Example #1 Saving a HTML tree into a string
<?php
$doc = new DOMDocument('1.0');
$root = $doc->createElement('html');
$root = $doc->appendChild($root);
$head = $doc->createElement('head');
$head = $root->appendChild($head);
$title = $doc->createElement('title');
$title = $head->appendChild($title);
$text = $doc->createTextNode('This is the title');
$text = $title->appendChild($text);
echo $doc->saveHTML();
?>
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https://www.php.net/manual/en/domdocument.savehtml.php