PHP Tutorial - PHP getDocNamespaces() Function

The getDocNamespaces() function returns the namespaces declared in an XML document.

Syntax

PHP getDocNamespaces() Function has the following syntax.

getDocNamespaces(recursive,from_root);

Parameter

Parameter	Is required	Description
recursive	Optional.	A Boolean value. If TRUE, all namespaces declared in parent and child nodes are returned. If FALSE, only namespaces declared in root node is returned. Default is FALSE
from_root	Optional.	A Boolean value. TRUE check namespaces from the root of the XML doc. FALSE check namespaces under a child node. Default is TRUE

Return

Returns an array of namespace names with their associated URIs

Example

Return the namespaces declared in the root of the XML document:


<?php/*ww  w  . jav  a  2s.  c  o m*/
$xml=<<<XML
<?xml version="1.0" standalone="yes"?>
<books xmlns:c="http://php.net/ns">
  <c:book id="1">Java</c:book>
  <c:book id="2">PHP</c:book>
  <c:book id="3">CSS</c:book> 
</books>
XML;

$sxe=new SimpleXMLElement($xml);
$ns=$sxe->getDocNamespaces();
print_r($ns);
?>

The code above generates the following result.

Example 2

Return all namespaces declared in parent and child nodes of the XML document:


<?php/*  w w w . j a  va2s. co m*/
$xml=<<<XML
<?xml version="1.0" standalone="yes"?>
<books xmlns:c="http://php.net">
  <c:book id="1">Java</c:book>
  <c:book id="2">PHP</c:book>
  <c:book id="3" a:language="English" xmlns:a="http://php.net">CSS</c:book> 
</books>
XML;

$sxe=new SimpleXMLElement($xml);
$ns=$sxe->getDocNamespaces(TRUE);
var_dump($ns);
?>

The code above generates the following result.