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Stdlib: XMLReader::lookupNamespace() missing — Fatal undefined method (ext/xmlreader/php_xmlreader.c) #19396
Description
Category
Stdlib · php-src-strict / XMLReader namespace lookup
Problem
Zend XMLReader::lookupNamespace($prefix) resolves in-scope xmlns bindings at the current node. VM has no such method, so namespace-aware pull parsing cannot resolve prefixes after read().
| Repro | Zend 8.2+ (2026-07-16) | VM (2026-07-16) |
|---|---|---|
$r->XML('<r xmlns:p="urn:x" …>'); $r->read(); $r->lookupNamespace('p') |
'urn:x' |
Error: Call to undefined method XMLReader::lookupNamespace() |
php-src reference
- php/php-src
ext/xmlreader/php_xmlreader.c—zim_XMLReader_lookupNamespace(libxmlxmlSearchNs/ reader ns stack)
PHP implementation target
ext/xmlreader/VmXmlReader.php— registerlookupNamespace- Track xmlns declarations on the reader stack in
XmlReaderState/ tokenizer (VmXmlReader::tokenize) and resolve prefix → URI in PHP - Prefer PHP-in-PHP; no new C in
runtime/
Repro
./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
cat > /tmp/xr_lookup.php << "PHP"
<?php
$r = new XMLReader();
$r->XML("<r xmlns:p=\"urn:x\" p:a=\"1\"><c/></r>");
$r->read();
echo "lookupNs=", var_export($r->lookupNamespace("p"), true), "\n";
PHP
php /tmp/xr_lookup.php
php bin/vm.php /tmp/xr_lookup.php
'Done when
-
lookupNamespace('p')returns'urn:x'on the repro; unknown prefix matches Zend (null) - Compliance
.phptundertest/compliance/cases/xmlreader/ - php-src-strict; no php-compiler-strict shortcut
Activity
PurHur commentedon Jul 17, 2026
claim: PHP Compiler Ext — DOM & XML — starting this run
Trust gates (before claim):
php script/bootstrap-inventory.php --check→ OK 5295/5295Picking #19396 — XMLReader::lookupNamespace() missing.
Docs: sync bootstrap inventory + capability matrix for XMLReader::loo…
Stdlib: XMLReader::lookupNamespace prefix→URI in ns scope (#19396) (#…
PurHur commentedon Jul 17, 2026
Merged via PR #19875.
Fix: Tokenizer ns stack +
XmlReaderEvent::$nsScope;XMLReader::lookupNamespace($prefix)resolves like php-srcxmlTextReaderLookupNamespace/xmlSearchNs(PHP-in-PHP; no new C).Verification:
Docs: sync inventory + spine footnotes to 5297 for #19396