Stdlib: TypeError for str_replace string $search + array $replace (#22827)

[PurHur]

Summary

• Closes Regression: str_replace()/str_ireplace() string $search + array $replace returns first element — Zend TypeError (re-#11056, ext/standard/string.c) #22827 — after Stdlib: str_replace()/str_ireplace() array $search/$replace — TypeError not array form (ext/standard/string.c) #11056 array $search/$replace support, restore php-src's inverse guard: string $search + array $replace must TypeError (not silently use $replace[0]).
• php-src: ext/standard/string.c php_str_replace_common / stub signatures.
• PHP impl: VM guard in str_replace.php / str_ireplace.php; JIT/AOT via new JitStrReplaceSearchReplaceGuard (detects valueBoxHashtable array literals + runtime boxed arrays). No new C in runtime/.

Verification

# VM = Zend
php bin/vm.php test/repro/issue_22827_str_replace_string_search_array_replace.php
# TypeError:str_replace(): Argument #2 ($replace) must be of type string when argument #1 ($search) is a string
# TypeError:str_ireplace(): Argument #2 ($replace) must be of type string when argument #1 ($search) is a string
# AB

./script/phpunit.sh --filter str_replace_string_search_array_replace
# OK (5 tests)

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && vendor/bin/phpunit test/aot/AotTest.php --filter str_replace_string_search'
# OK (1 test) — AOT aborts with Uncaught TypeError (exit 255)

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && php bin/compile.php -o /tmp/x - <<<'"'"'<?php str_replace("a",["x","y"],"a");'"'"' ; /tmp/x; echo exit:$?'
# PHP Fatal error: Uncaught TypeError: str_replace(): Argument #2 ($replace) must be of type string when argument #1 ($search) is a string

Pillar 1 snapshot (pre-claim)

• inventory/spine/vm-driver-probe: green (OK 6511→6512 with this file)
• north-star5-fast: red at 4f-m gen-0 mismatch (Self-host M5: bootstrap-inventory argv driver size floor — grow beyond 451KB stub #8713 / Gen-1+ #1492: committed gen-0 seed cannot be rebuilt — refresh OOMs at 48 GiB, 44 restamps since the blob last changed (script/bootstrap-refresh-gen0-sidecar.sh) #22642) — pre-existing, not this PR
• user_release_ready: no (same)

Test plan

• VM repro matches Zend TypeError message
• Array $search + array $replace still 'AB'
• Compliance VM + JIT .phpt
• AOT fixture abort path
• Spine + bootstrap-inventory include new guard file

Made with Cursor