DOMDocument->saveXML()

Dumps the internal XML tree back into a string ()

DOMDocument {
  string saveXML(DOMNode node,
                 integer 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.

参数

node

Use this parameter to output only a specific node without XML declaration rather than the entire document.

options

Additional Options. Currently only LIBXML_NOEMPTYTAG is supported.

返回值

Returns the XML, or FALSE if an error occurred.

异常

DOM_WRONG_DOCUMENT_ERR

Raised if node is from another document.

更新日志

版本说明
5.1.0 Added the options parameter

范例

例 475. Saving a DOM tree into a string

<?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
"Retrieving all the document:\n";
echo
$doc->saveXML() . "\n";

echo
"Retrieving only the title part:\n";
echo
$doc->saveXML($title);

?>

上例将输出:

Retrieving all the document:
<?xml version="1.0"?>
<book>
 <title>This is the title</title>
</book>

Retrieving only the title part:
<title>This is the title</title>