Regression: DOMNamedNodeMap::getNamedItem uses qName — Zend matches local name for namespaced attrs (ext/dom/nodemap.c)

[PurHur]

Category

bug · php-src-strict · DOM NamedNodeMap

Problem

For a namespaced attribute (xmlns:x="urn:x" x:a="1"), Zend DOMNamedNodeMap::getNamedItem("a") returns the Attr (lookup by local name). getNamedItem("x:a") returns null. VM inverts this: local name misses, qualified name hits.

Repro	Zend 8.2 (2026-07-28)	VM (2026-07-28)
getNamedItem("a") on x:a="1"	Attr nodeValue 1	null
getNamedItem("x:a")	null	Attr nodeValue 1
getNamedItemNS("urn:x","a")	1 (both)	1 (both)

php-src reference

• php/php-src ext/dom/nodemap.c — dom_namednodemap_get_named_item / libxml xmlHasNsProp local-name path
• Peer closed: Stdlib: DOMNamedNodeMap::getNamedItemNS() missing — namespace attribute lookup returns null (ext/dom/namednodemap.c) #17515 (getNamedItemNS presence); this is non-NS getNamedItem local-name semantics

PHP implementation target

• ext/dom/ NamedNodeMap getNamedItem — match php-src local-name lookup for namespaced Attr nodes; do not key solely on node->name / qName string

Repro

./script/docker-exec.sh -- bash -lc 'cat > /tmp/getnameditem_ns.php <<'"'"'PHP'"'"'
<?php
$doc = new DOMDocument();
$doc->loadXML("<root xmlns:x=\"urn:x\" x:a=\"1\" b=\"2\"/>");
$m = $doc->documentElement->attributes;
echo "local=", var_export($m->getNamedItem("a")?->nodeValue, true), "\n";
echo "qname=", var_export($m->getNamedItem("x:a")?->nodeValue, true), "\n";
PHP
php /tmp/getnameditem_ns.php; php bin/vm.php /tmp/getnameditem_ns.php'

Done when

• getNamedItem("a") returns the namespaced Attr; getNamedItem("x:a") returns null (VM + JIT/AOT in scope)
• Non-namespaced getNamedItem / getNamedItemNS unchanged
• Compliance / unit guard; php-src-strict; no php-compiler-strict shortcut

[PurHur]

Maintainer gate probe (2026-07-28) — filed with this batch

Could not comment on #10533 (2500+ comment lock). Snapshot:

Gate	Status
bootstrap-inventory --check	green OK 6614/6614
north-star5-verify-fast	green
vm-driver-execute-probe	green
helper-runtime-prelink --strict	red — fingerprint mismatch (#24302); first failing release-readiness gate
user_release_ready	no
gen-0	stale (2026-06-15 seed)

Sibling parity filings this run: #24332 (this), #24333, #24334, #24335.

[PurHur]

claim: PHP Compiler Ext — DOM & XML — starting this run

Gate probe (this workspace, before implement):

• docker info: ok
• bootstrap-inventory / north-star5-fast / release-readiness: running now
• Will implement getNamedItem local-name semantics vs Zend nodemap.c

[PurHur]

Merged in #24350

Verification

• Zend / VM / JIT: getNamedItem("a") → 1, getNamedItem("x:a") → null on namespaced Attr
• compliance VM+JIT dom_namednodemap_get_named_item_local; entity ndata regression still green
• AOT: method proxy wired; $el->attributes property access still segfaults on master (pre-existing; not this change)

Gate snapshot: inventory OK 6614/6614; north-star5-fast green; helper-runtime-prelink still red (#24336).