Regression: extension_loaded('zip')/ZipArchive/zip_open phantom under PROFILE=8.4 — Zend ext/zip absent (re-#18137, ext/zip)

[PurHur]

Category

stdlib · php-src-strict · phantom extension (zip under PROFILE=8.4)

Problem

Pinned-container Zend 8.2 does not ship ext/zip. On the default profile, php-compiler correctly reports zip absent (matching #18137). Under PHP_COMPILER_PROFILE=8.4, it again advertises the module and entry points (extension_loaded('zip'), class_exists('ZipArchive'), function_exists('zip_open')).

Related Reflection-only ticket #24666 (zip_open named args) assumes the symbol exists — this issue is the PROFILE=8.4 registration phantom vs the reference Zend build.

Probed 2026-07-29 Zend 8.2.32 vs bin/vm.php @ 3ab3fae30.

Repro	Zend 8.2	VM default	VM PROFILE=8.4
extension_loaded('zip')	false	false	true
class_exists('ZipArchive')	false	false	true
function_exists('zip_open')	false	false	true

php-src reference

• php/php-src ext/zip/php_zip.c — module + ZipArchive
• php/php-src ext/zip/php_zip.stub.php — zip_open / ZipArchive stubs

PHP implementation target

• Gate ext/zip registration the same way as other PROFILE=8.4 phantoms (ext/ldap Regression: extension_loaded('ldap')/ldap_connect/constants bucket phantom under PROFILE=8.4 — Zend ext/ldap absent (re-#23857, ext/ldap) #24536, ext/pgsql Regression: extension_loaded('pgsql')/function_exists('pg_connect')/PGSQL_* phantom — Zend ext/pgsql absent (ext/pgsql) #24994 / Regression: pg_set_error_context_visibility() phantom under PROFILE=8.4 — absent without ext/pgsql (ext/pgsql) #24627)
• extension_loaded / class_exists / function_exists must match container Zend unless zip is explicitly side-loaded
• PHP-in-PHP registry; no new C

Repro

./script/docker-exec.sh -- bash -lc 'cat > /tmp/zip_ph.php <<'"'"'PHP'"'"'
<?php
echo "extension_loaded(zip)="; var_export(extension_loaded("zip")); echo "\n";
echo "class_exists(ZipArchive)="; var_export(class_exists("ZipArchive")); echo "\n";
echo "function_exists(zip_open)="; var_export(function_exists("zip_open")); echo "\n";
PHP
php /tmp/zip_ph.php
php bin/vm.php /tmp/zip_ph.php
PHP_COMPILER_PROFILE=8.4 php bin/vm.php /tmp/zip_ph.php'

Done when

• Under PROFILE=8.4 on the reference harness: extension_loaded('zip'), ZipArchive, and zip_open agree with container Zend (absent → false) unless zip is explicitly enabled/side-loaded
• Default profile remains false (no regression of Regression: extension_loaded('zip') + ZipArchive phantom — advertises without ext/zip (re-#11676, ext/zip/php_zip.c) #18137)
• Compliance/repro guard; php-src-strict

[PurHur]

claim: PHP Compiler STD Lib Advanced — batch (#24994, #24627, #25010, #25011). Queued after #24994.

[PurHur]

merged via #25040

Verification:

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
php test/repro/maintainer_gap_zip_phantom.php
php bin/vm.php test/repro/maintainer_gap_zip_phantom.php
PHP_COMPILER_PROFILE=8.4 php bin/vm.php test/repro/maintainer_gap_zip_phantom.php'
# all false — matches Zend

vendor/bin/phpunit --filter 'VMTest.*extension_loaded_zip_phantom|ZipExtensionPolicyTest|ZipModuleTest|ziparchive_forward_profile|zip_procedural_basic'
# OK (10)

Next in batch: #25011 bz2.