update : 2015.11.03
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Returns namespaces declared in document
SimpleXMLElement
PHP Manual

SimpleXMLElement::getDocNamespaces

(PHP 5 >= 5.1.2)

SimpleXMLElement::getDocNamespaces — Returns namespaces declared in document

설명

public array SimpleXMLElement::getDocNamespaces ([ bool $recursive = false [, bool $from_root = true ]] )

Returns namespaces declared in document

인수

recursive

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

from_root

Allows you to recursively check namespaces under a child node instead of from the root of the XML doc.

반환값

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

예제

Example #1 Get document namespaces

<?php

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

$namespaces = $sxe->getDocNamespaces();
var_dump($namespaces);

?>

위 예제의 출력:

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

Example #2 Working with multiple namespaces

<?php

$xml = <<<XML
<?xml version="1.0" standalone="yes"?>
<people xmlns:p="http://example.org/ns" xmlns:t="http://example.org/test">
    <p:person t:id="1">John Doe</p:person>
    <p:person t:id="2" a:addr="123 Street" xmlns:a="http://example.org/addr">
        Susie Q. Public
    </p:person>
</people>
XML;
 
$sxe = new SimpleXMLElement($xml);

$namespaces = $sxe->getDocNamespaces(TRUE);
var_dump($namespaces);

?>

위 예제의 출력:

array(3) {
  ["p"]=>
  string(21) "http://example.org/ns"
  ["t"]=>
  string(23) "http://example.org/test"
  ["a"]=>
  string(23) "http://example.org/addr"
}

변경점

버전 설명
5.4.0 Added from_root parameter.

참고

SimpleXMLElement
PHP Manual