SimpleXMLElement::asXML

(PHP 5 >= 5.0.1)

SimpleXMLElement::asXML — Return a well-formed XML string based on SimpleXML element

说明

public mixed SimpleXMLElement::asXML ([ string $filename ] )

The asXML method formats the parent object's data in XML version 1.0.

参数

filename: If specified, the function writes the data to the file rather than returning it.

返回值

If the filename isn't specified, this function returns a string on success and FALSE on error. If the parameter is specified, it returns TRUE if the file was written successfully and FALSE otherwise.

范例

Example #1 Get XML


<?php
$string = <<<XML
<a>
 <b>
  <c>text</c>
  <c>stuff</c>
 </b>
 <d>
  <c>code</c>
 </d>
</a>
XML;

$xml = new SimpleXMLElement($string);

echo $xml->asXML();

?>

以上例程会输出：

<?xml version="1.0"?>
<a>
 <b>
  <c>text</c>
  <c>stuff</c>
 </b>
 <d>
  <c>code</c>
 </d>
</a>

asXML also works on Xpath results:

Example #2 Using asXML() on SimpleXMLElement::xpath() results


<?php
// Continued from example XML above.

/* Search for <a><b><c> */
$result = $xml->xpath('/a/b/c');

while(list( , $node) = each($result)) {
    echo $node->asXML();
}
?>

以上例程会输出：

<c>text</c><c>stuff</c>

参见

Basic SimpleXML usage

PHP手册 - N: Return a well-formed XML string based on SimpleXML element

用户评论:

oleg dot pavlin at gmail dot com (10-Jan-2012 12:17)

Function asXML decodes special chars like ?, ? and others to æ, ø To get normal output use without quoting: $xml = html_entity_decode($xml, ENT_NOQUOTES, 'UTF-8');

jcr at di dot uminho dot pt (25-Jan-2011 10:32)

Code snippet to load a XML document, increment an attribute and store it again. My XML looks like: <?xml version="1.0" encoding="ISO-8859-1"?> <doctypes counter="16"> <doctype id="d1"> <name>Carta</name> <acro>CA</acro> </doctype> ... </doctypes> I want to retrieve the counter attribute, increment it, and store the new document at the end: <?php $document = simplexml_load_file("mydoc.xml"); $cont = (integer) $document['counter']; $document['counter'] = $cont+1; $document->asXML("mydoc.xml"); ?>