PHP registerXPathNamespace() Function
Example
Create a namespace context for the next XPath query:
<?php
$xml=<<<XML
<book xmlns:chap="http://example.org/chapter-title">
<title>My Book</title>
<chapter id="1">
<chap:title>Chapter 1</chap:title>
<para>Donec velit. Nullam eget tellus...</para>
</chapter>
<chapter id="2">
<chap:title>Chapter 2</chap:title>
<para>Lorem ipsum dolor sit amet....</para>
</chapter>
</book>
XML;
$sxe=new SimpleXMLElement($xml);
$sxe->registerXPathNamespace('c','http://example.org/chapter-title');
$result=$sxe->xpath('//c:title');
foreach ($result as $title)
{
echo $title . "<br>";
}
?>
Run Example »
Definition and Usage
The registerXPathNamespace() function creates a namespace context for the next XPath query.
This function is useful if a namespace prefix is changed in an XML document. The registerXPathNamespace() function will create a prefix for specified namespace, so that the affected XML nodes can be accessed without altering the application code too much.
Syntax
SimpleXMLElement::registerXPathNamespace(prefix, ns)
Parameter Values
| Parameter | Description |
|---|---|
| prefix | Required. Specifies the namespace prefix to use in the XPath query for the namespace given in ns |
| ns | Required. Specifies the namespace to use for the XPath query |
Technical Details
| Return Value: | TRUE on success. FALSE on failure |
|---|---|
| PHP Version: | 5.1+ |
❮ PHP SimpleXML Reference
