SimpleXMLElement
PHP Manual

SimpleXMLElement::getNamespaces

(PHP 5 >= 5.1.2, PHP 7)

SimpleXMLElement::getNamespaces — Returns namespaces used in document

说明

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

Returns namespaces used in document

参数

recursive

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

返回值

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

范例

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);

?>

以上例程会输出：

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

参见

SimpleXMLElement
PHP Manual