(PHP 5, PHP 7, PHP 8)
DOMDocument::save — Dumps the internal XML tree back into a file
$filename, int $options = 0): int|falseCreates an XML document from the DOM representation. This function is usually called after building a new dom document from scratch as in the example below.
filenameThe path to the saved XML document.
optionsAdditional Options. Currently only LIBXML_NOEMPTYTAG is supported.
Returns the number of bytes written or false if an error occurred.
Example #1 Saving a DOM tree into a file
<?php
$doc = new DOMDocument('1.0');
// we want a nice output
$doc->formatOutput = true;
$root = $doc->createElement('book');
$root = $doc->appendChild($root);
$title = $doc->createElement('title');
$title = $root->appendChild($title);
$text = $doc->createTextNode('This is the title');
$text = $title->appendChild($text);
echo 'Wrote: ' . $doc->save("/tmp/test.xml") . ' bytes'; // Wrote: 72 bytes
?>