SymfonyWorld Online 2022 Winter Edition

SimpleXMLElement::getDocNamespaces

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

SimpleXMLElement::getDocNamespaces Returns namespaces declared in document

说明

public SimpleXMLElement::getDocNamespaces(bool $recursive = false, bool $fromRoot = true): array|false

Returns namespaces declared in document

参数

recursive

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

fromRoot

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

返回值

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

范例

示例 #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);

?>

以上例程会输出:

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

示例 #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);

?>

以上例程会输出:

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

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