PHP registerXPathNamespace() Function
 Complete PHP SimpleXML Reference
Definition and Usage
The registerXPathNamespace() registers 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
class SimpleXMLElement
{
string registerXPathNamespace(prefix,ns)
}
|
| Parameter |
Description |
| prefix |
Required. Specifies the namespace prefix |
| ns |
Required. Specifies the namespace URL. This must match a
namespace in the XML document. |
Example
XML File
<?xml version="1.0" encoding="ISO-8859-1"?>
<note xmlns:b="http://www.w3schools.com/example/">
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<b:body>Don't forget me this weekend!</b:body>
</note>
|
PHP Code
<?php
$xml = simplexml_load_file("test.xml");
$xml->registerXPathNamespace("msg",
"http://www.w3schools.com/example/");
$result = $xml->xpath("msg:body");
foreach ($result as $message)
{
echo $message;
}
?>
|
The output of the code above will be:
|
Don't forget me this weekend!
|
Complete PHP SimpleXML Reference
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