Regression: ResourceBundle ICUDATA-region count/keys — extra Countries%chagos (ext/intl/resourcebundle)

[PurHur]

Category

Regression · php-src-strict · stdlib (ext/intl ResourceBundle)

Problem

ResourceBundle::create('en', 'ICUDATA-region') (and count() / foreach) disagree with Zend/php-src on the host ICU catalog: VM exposes an extra top-level key Countries%chagos and a larger Countries child count.

Repro	Zend 8.2.32	VM (2026-07-24)
count(ResourceBundle::create('en','ICUDATA-region'))	3	4
Top-level keys	Countries, Countries%short, Countries%variant	+ Countries%chagos
count($rb->get('Countries'))	294	295

Same ICU library family should yield Zend-identical key sets for the stock ICUDATA-region table; extra keys indicate wrong ures open path, alias expansion, or unfiltered enumeration in VmResourceBundle.

php-src reference

• php/php-src ext/intl/resourcebundle/resourcebundle.c — create / count / iteration
• php/php-src ext/intl/resourcebundle/resourcebundle_iterator.c
• ICU: ures_open / ures_getSize / ures_getByIndex / ures_getKey

PHP implementation target

• ext/intl/VmResourceBundle.php — open/enumerate path for ICUDATA-region must match php-src (fallback locale, alias handling, table filter)
• Keep ICU behind existing thin FFI; fix PHP enumeration/open args, not new C helpers
• Related open: Regression: ResourceBundle::create() fallback locale skips U_USING_DEFAULT_WARNING (-127) (ext/intl/resourcebundle) #22854 (fallback warning), Regression: Locale/NumberFormatter/IntlCalendar/ResourceBundle class_exists true without ext/intl (re-#19670, ext/intl/php_intl.c) #22692 (class_exists policy) — this is key-set/count parity, not those

Repro

./script/docker-exec.sh -- bash -lc 'cat > /tmp/rb_region.php <<'\''PHP'\''
<?php
$r = ResourceBundle::create(\"en\", \"ICUDATA-region\");
echo \"count=\", count($r), \"\n\";
foreach ($r as $k => $_) { echo $k, \"\n\"; }
$c = $r->get(\"Countries\");
echo \"countries=\", count($c), \"\n\";
PHP
php /tmp/rb_region.php; php bin/vm.php /tmp/rb_region.php'

Done when

• count + foreach key order/set for ICUDATA-region match Zend on the same ICU
• Countries child count matches Zend
• Compliance / unit guard under test/unit/IntlModuleTest.php or test/compliance/cases/
• php-src-strict; no php-compiler-strict shortcut