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DOMNode::lookupPrefix> <DOMNode::isSupported
[edit] Last updated: Sun, 19 May 2013

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DOMNode::lookupNamespaceURI

(PHP 5)

DOMNode::lookupNamespaceURI — Gets the namespace URI of the node based on the prefix

Description

public string DOMNode::lookupNamespaceURI ( string $prefix )

Gets the namespace URI of the node based on the prefix.

Parameters

prefix

The prefix of the namespace.

Return Values

The namespace URI of the node.

See Also



add a note add a note User Contributed Notes DOMNode::lookupNamespaceURI - [2 notes]
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0
_ michael
3 years ago
You have to pass *null* to lookupNamespaceURI if you want to read the default namespace. Passing an empty string doesn't work - even though the documentation says that lookupNamespaceURI takes a string as argument (and null would just be converted to an empty string).
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-1
lewar
5 years ago
Simple way to get the URI of the default namespace:

<?php
    $document = new DOMDocument();
    $document->load($xml_file);
    $uri = $document->documentElement->lookupnamespaceURI(NULL);
?>
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