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(PHP 5, PHP 7, PHP 8)
SimpleXMLElement::asXML — Return a well-formed XML string based on SimpleXML element
$filename = null): string|bool
The asXML method formats the parent object's data
in XML version 1.0.
filename
If a string value is provided, the function writes the data to the file rather than returning it.
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.
| 版本 | 说明 |
|---|---|
| 8.0.0 |
filename is nullable now.
|
示例 #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:
示例 #2 Using asXML() on SimpleXMLElement::xpath() results
<?php
// Continued from example XML above.
/* Search for <a><b><c> */
$result = $xml->xpath('/a/b/c');
foreach ($result as $node) {
echo $node->asXML();
}
?>
以上例程会输出：
<c>text</c><c>stuff</c>
