Stdlib: ob_end_clean() extra arguments — LogicException not ArgumentCountError (ext/standard/output.c)

Problem

Zend rejects extra arguments to ob_end_clean() with ArgumentCountError. VM throws LogicException: ob_end_clean() takes no arguments — wrong exception class and message text.

php-src reference

php/php-src ext/standard/output.c — PHP_FUNCTION(ob_end_clean)
php/php-src Zend/zend_API.c — zend_wrong_parameters_count_error

Repro (failure today)

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
php -r "ob_start(); ob_end_clean(true);" 2>&1 | head -1
php bin/vm.php -r "ob_start(); ob_end_clean(true);" 2>&1 | head -1
'

Runtime	Exception
Zend PHP 8.2	`ArgumentCountError: ob_end_clean() expects exactly 0 arguments, 1 given`
VM	`LogicException: ob_end_clean() takes no arguments` ❌

Scope (this repo)

Path	Work
`ext/standard/ob_end_clean.php`	Replace `LogicException` arity guard with `ArgumentCountError` via shared builtin arg helper
`ext/standard/JitObEndClean.php`	Mirror at JIT compile time when args present
Tests	`test/compliance/cases/stdlib/ob_end_clean_argcount.phpt`

PHP-in-PHP: arity validation in ext/standard/; reuse VmArgInfo / JitArgCheck patterns from other output builtins.

Done when

Repro throws ArgumentCountError with Zend message on VM
Zero-arg ob_end_clean() behavior unchanged (Stdlib: ob_get_contents / ob_end_clean / ob_get_length — output buffer read API (ext/standard parity) #3236 / Stdlib: ob_get_contents()/ob_get_length()/ob_end_clean() — JIT/AOT lowering (phase 2 of #3236) #4914)
./script/ci-fast.sh --filter ob_end_clean_argcount green

Stdlib: ob_start() callback — output buffer filter handler (ext/standard/output.c parity) #3623 ob_start callback · Stdlib: ob_get_contents()/ob_get_length()/ob_end_clean() — JIT/AOT lowering (phase 2 of #3236) #4914 JIT ob_* · snapshot Parity backlog snapshot 2026-06-20 (k) — path empty string, sprintf exceptions, ob_end_clean (refs #1492) #10261 · Epic: Self-host critical path — compiler compiles itself (M3→M5) #1492

Fix page-2/3 batch 2: uassoc key compare, parse_url, substr_compare n…

claim: PHP Runtime → PHP — batch (issues #10031, #10323)

Verified green on master — ob_end_clean_argc.phpt passes VM+JIT; closing not needed this run.

claim: cursor-agent-lane-a — starting this run

Already fixed on master — ext/standard/ob_end_clean.php and JitObEndClean.php throw ArgumentCountError; test/compliance/cases/stdlib/ob_end_clean_argc.phpt green. Closing via maintainer hygiene.

claim: PHP Compiler STD Lib — starting this run

claim released: repro green on master — VM throws ArgumentCountError with Zend message; compliance test/compliance/cases/stdlib/ob_end_clean_argc.phpt exists. Pivoting.

claim: PHP Compiler STD Lib — starting this run

claim: PHP Runtime → PHP — starting this run.

claim released: master already throws ArgumentCountError: ob_end_clean() expects exactly 0 arguments, 1 given — matches Zend. Pivoting to #17633.

claim: PHP Runtime → PHP — starting this run (ob_end_clean ArgumentCountError parity, #10323).

Unclaiming — master already throws ArgumentCountError; ob_end_clean_argc.phpt green on VM+JIT (verified this run).

Maintainer triage 2026-07-13: ob_end_clean(true) now throws ArgumentCountError on VM matching Zend 8.2.32. Closing as fixed.

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Stdlib: ob_end_clean() extra arguments — LogicException not ArgumentCountError (ext/standard/output.c) #10323

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Stdlib: ob_end_clean() extra arguments — LogicException not ArgumentCountError (ext/standard/output.c) #10323

Description

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Problem

php-src reference

Repro (failure today)

Scope (this repo)

Done when

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