DOMNode::lookupNamespaceUri

(PHP 5, PHP 7, PHP 8)

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

说明

public DOMNode::lookupNamespaceUri(string $prefix): string

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

参数

prefix: The prefix of the namespace.

返回值

The namespace URI of the node.

参见

DOMNode::lookupPrefix() - Gets the namespace prefix of the node based on the namespace URI

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User Contributed Notes 2 notes

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lewar ¶

15 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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-5

_ michael ¶

12 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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