update : 2015.11.03
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Returns namespaces used in document
SimpleXMLElement
PHP Manual

SimpleXMLElement::getNamespaces

(PHP 5 >= 5.1.2)

SimpleXMLElement::getNamespaces — Returns namespaces used in document

설명

public array SimpleXMLElement::getNamespaces ([ bool $recursive = false ] )

Returns namespaces used in document

인수

recursive

If specified, returns all namespaces used in parent and child nodes. Otherwise, returns only namespaces used in root node.

반환값

The getNamespaces method returns an array of namespace names with their associated URIs.

예제

Example #1 Get document namespaces in use

<?php

$xml = <<<XML
<?xml version="1.0" standalone="yes"?>
<people xmlns:p="http://example.org/ns" xmlns:t="http://example.org/test">
    <p:person id="1">John Doe</p:person>
    <p:person id="2">Susie Q. Public</p:person>
</people>
XML;
 
$sxe = new SimpleXMLElement($xml);

$namespaces = $sxe->getNamespaces(true);
var_dump($namespaces);

?>

위 예제의 출력:

array(1) {
  ["p"]=>
  string(21) "http://example.org/ns"
}

참고

SimpleXMLElement
PHP Manual