Bug #65375 [Nab]: DOMXPath query registerNodeNS produces unexpected behavior

Edit report at https://bugs.php.net/bug.php?id=65375&edit=1 ID: 65375 Updated by: mike@php.net Reported by: goetas at lignano dot it Summary: DOMXPath query registerNodeNS produces unexpected behavior Status: Not a bug Type: Bug Package: DOM XML related Operating System: ubuntu 12.04 PHP Version: 5.4.17 Block user comment: N Private report: N New Comment: Yeah, unfortunately we're a bit too late in the game and changing the default value of that parameter would probably be a bad idea. Previous Comments: ------------------------------------------------------------------------ [2013-12-03 08:08:43] goetas at lignano dot it I agree with you, using register_node_ns==true then the namespaces of the context node should be used. $xpath = new DOMXPath($dom); $xpath->registerNamespace("ns2", "http://my.com/ns1"); echo $xpath->query("//ns2:tag-2", $dom->documentElement)->length; // expected to be 1, actually 0 It is really strange that i have to "remember" the existence of "register_node_ns" parameter and care about it. register_node_ns option will overwrite previously registered namespaces using registerNamespace. registerNamespace() should have more precedence than register_node_ns. I think that register_node_ns should not overwrite previously registered namespaces with registerNamespace. (optionally register_node_ns should be false by default, but it will create a BC issue, and may be not a good idea). ------------------------------------------------------------------------ [2013-12-02 17:20:11] mike@php.net If register_node_ns==true then the namespaces of the context node are used. If the context node is not given, the document's root node is used. ------------------------------------------------------------------------ [2013-08-02 07:12:48] goetas at lignano dot it Description: ------------ registerNodeNS option (default to true) added with php 5.3.3 produces unexpected behavior and BC issue. $registerNodeNS = true seems to remove (overwrite) registered namespaces with DOMXPath::registerNamespace() method, Similar problem has been reported with #55700 Test script: --------------- <?php $dom = new DOMDocument('1.0', 'UTF-8'); $dom->loadXML(' <ns1:tag xmlns:ns1="http://my.com/ns1" xmlns:ns2="http://my.com/ns2"> <ns1:tag-2/> <ns2:extra/> </ns1:tag>'); $xpath = new DOMXPath($dom); $xpath->registerNamespace("ns2", "http://my.com/ns1"); echo $xpath->query("//ns2:tag-2", null, false)->length."\n"; echo $xpath->query("//ns2:tag-2", null, true)->length,"\n"; /* * registerNodeNS option should skip prefix registration if * same prefix is already registered with registerNamespace() method. */ Expected result: ---------------- 1 1 Actual result: -------------- 1 0 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65375&edit=1