PHP Manual
SimpleXMLElement
Return a well-formed XML string based on SimpleXML element

SimpleXMLElement::asXML

(PHP 5, PHP 7)

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

说明

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

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

SimpleXMLElement::__toString() - Returns the string content
Basic SimpleXML usage

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