Category

stdlib

Problem

VM ini_set() / ini_get() only support three keys (error_reporting, display_errors, memory_limit) via ext/standard/VmIni.php (#1374). Zend supports hundreds of INI entries, including register_argc_argv (needed for #4374 CLI $argc/$argv gating) and zend.assertions (needed for #3316 assert parity).

Unknown options: Zend ini_set() returns false and may emit a warning; wrong arity throws ArgumentCountError. This build throws LogicException for arity and returns false silently for unknown keys.

php-src reference

• php/php-src ext/standard/basic_functions.c — php_ini_set, php_ini_get
• php/php-src main/main.c — PG(register_argc_argv)
• php/php-src ext/standard/assert.c — zend.assertions

Repro

repro_ini_argv.php:

<?php
var_dump(ini_set('register_argc_argv', '0'));
var_dump(ini_get('register_argc_argv'));
var_dump($argc ?? 'unset', isset($argv));

Run with extra CLI args:

php repro_ini_argv.php a b
./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && php bin/vm.php repro_ini_argv.php a b'

After register_argc_argv=0, Zend omits populating $argc/$argv; this compiler still exposes them today (#4374).

Second snippet — assertions INI:

<?php
var_dump(ini_set('zend.assertions', '0'));
var_dump(ini_get('zend.assertions'));

Scope (this repo)

• ext/standard/VmIni.php, ext/standard/ini_set_.php, ext/standard/ini_get_.php
• lib/VM/Context.php — flag for argv registration
• CLI entry: bin/vm.php, native driver argv init (coordinate with Runtime: CLI / + ['argv'] (register_argc_argv) parity #4374)
• JIT: ext/standard/JitIni.php / lib/AOT/runtime/phpc_ini_set.c if already used for error_reporting

Done when

• register_argc_argv get/set matches Zend; repro with a b args matches Zend before/after ini_set('register_argc_argv','0')
• zend.assertions readable/writable with string values 1 / 0 / -1 like Zend
• Wrong arity → ArgumentCountError (not LogicException) — align Stdlib: builtin argument count errors should be ArgumentCountError (not LogicException) #4145 if landed
• Compliance PHPT + ./script/ci-fast.sh --filter ini_register_argc_argv green

Links

• Runtime: CLI / + ['argv'] (register_argc_argv) parity #4374 — CLI $argc / $argv runtime (depends on this INI)
• Stdlib: assert() — runtime assertion builtin with INI and zend.assertions (ext/standard/assert.c parity) #3316 — assert() + zend.assertions
• Closed Stdlib: ini_set() — VM + LLVM JIT/AOT #1374 — minimal ini_set subset (extend, do not replace)