[SimpleXML] Fix namespace filter on element returned by addChild() - #259
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[SimpleXML] Fix namespace filter on element returned by addChild()#259iliaal wants to merge 1 commit into
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The SimpleXMLElement wrapper returned by addChild() stored the QName prefix as the iteration namespace filter in href mode, so property accesses on the returned element compared the prefix against namespace hrefs and never matched the children that asXML() shows. Derive the filter from the namespace actually attached to the new node and use prefix mode; sibling audit found no other call site passing a prefix in href mode.
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The SimpleXMLElement returned by SimpleXMLElement::addChild() stored the QName prefix (e.g. "a" from "a:kid") as the iteration namespace filter in href mode, so any subsequent property access on that element compared the prefix against namespace hrefs and never matched the children that asXML() shows; $c->inner was empty and isset($c->inner) false even though the child element existed. The fix derives the filter from the namespace actually attached to the newly created node (newnode->ns->prefix) and switches to prefix mode, which also handles qname prefixes that differ from the resolved namespace declaration. A sibling audit of node_as_zval_str()/node_as_zval() call sites found no other site passing a QName prefix in href mode. Red/green verified: new phpt fails unpatched, passes patched, ext/simplexml suite has zero failures.