# DOMDocument->save()

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DOMDocument->save() — Dumps the internal XML tree back into a file

### Description

DOMDocument
mixed save ( string `$filename` [, int `$options` ] )

Creates 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.

### Parameters

`filename`

  The path to the saved XML document.

`options`

  Additional Options. Currently only LIBXML_NOEMPTYTAG is supported.

### Return Values

Returns the number of bytes written or `FALSE` if an error occurred.

### ChangeLog

Version | Description
--- | ---
5.1.0 | Added the `options` parameter

### Examples

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
?>`

### See Also

- DOMDocument->saveXML()
- DOMDocument->load()
- DOMDocument->loadXML()