SimpleXMLElement::getNamespaces

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

SimpleXMLElement::getNamespaces — Returns namespaces used in document

说明

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

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

User Contributed Notes

thiago at osfeio dot com 29-Oct-2013 04:23
this article has more info : http://www.sitepoint.com/parsing-xml-with-simplexml/
harry at nospam dot thestorm dot plus dot com 17-Feb-2012 02:21
If the namespace is nested in the xml, then you will have to loop over the nodes.

<?php




$xml = <<<XML
<?xml version="1.0" encoding="UTF-8"?>
  <people xmlns:p="http://example.org/ns" xmlns:t="http://example.org/test">
      <items>
            <title>This is a test of namespaces and my patience</title>
            <p:person id="1">John Doe</p:person>
            <p:person id="2">Susie Q. Public</p:person>
            <p:person id="1">Fish Man</p:person>
      </items>
  </people>
XML;




$sxe = new SimpleXMLElement($xml);




foreach ($sxe as $out_ns)
{
    $ns = $out_ns->getNamespaces(true);




    $child = $out_ns->children($ns['p']);




    foreach ($child as $out)
    {
        echo $out . "<br />";
    }
}
?>
harry at nospam dot thestorm dot plus dot com 16-Feb-2012 12:50
To read a namespace node you have to use the children method.

<?php

$xml = <<<XML
<?xml version="1.0" encoding="UTF-8"?>
<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);

$ns = $sxe->getNamespaces(true);

$child = $sxe->children($ns['p']);

foreach ($child->person as $out_ns)
{
    echo $out_ns;
}

?>