MFH: fix bug #47849 (Non-deep import loses the namespace)

add test

ext/dom/document.c

@@ -1196,6 +1196,9 @@ PHP_FUNCTION(dom_document_import_node)
 	if (nodep->doc == docp) {
 		retnodep = nodep;
 	} else {
+		if ((recursive == 0) && (nodep->type == XML_ELEMENT_NODE)) {
+			recursive = 2;
+		}
 		retnodep = xmlDocCopyNode(nodep, docp, recursive);
 		if (!retnodep) {
 			RETURN_FALSE;

ext/dom/tests/bug47849.phpt

@@ -0,0 +1,22 @@
+--TEST--
+Bug #47849 (Non-deep import loses the namespace).
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php 
+
+$aDOM= new DOMDocument();
+$aDOM->appendChild($aDOM->createElementNS('urn::root','r:root'));
+
+$fromdom= new DOMDocument();
+$fromdom->loadXML('<data xmlns="urn::data">aaa</data>');
+
+$data= $fromdom->documentElement;
+$aDOM->documentElement->appendChild($aDOM->importNode($data));
+
+echo $aDOM->saveXML();
+
+?>
+--EXPECT--
+<?xml version="1.0"?>
+<r:root xmlns:r="urn::root"><data xmlns="urn::data"/></r:root>