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--TEST--
DOM-Parsing GH-47 bis (XML null namespaces need to be preserved)
--EXTENSIONS--
dom
--FILE--
<?php
// Adapted from https://github.com/web-platform-tests/wpt/blob/master/domparsing/XMLSerializer-serializeToString.html
$dom = Dom\XMLDocument::createFromString('<root xmlns=""><child xmlns=""/></root>');
echo $dom->saveXml(), "\n";
$dom = Dom\XMLDocument::createFromString('<root xmlns="urn:u1"><child xmlns="urn:u1"/></root>');
echo $dom->saveXml(), "\n";
?>
--EXPECT--
<?xml version="1.0" encoding="UTF-8"?>
<root xmlns=""><child xmlns=""/></root>
<?xml version="1.0" encoding="UTF-8"?>
<root xmlns="urn:u1"><child xmlns="urn:u1"/></root>
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