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Regression: max/min/pow/fdiv/fmod Reflection types/names — Zend value/...values, num/exponent, num1/num2 (ext/standard/math.stub.php) #25459
Description
Category
Stdlib · php-src-strict · Reflection stubs / math
Problem
Reflection metadata for max / min / pow / fdiv / fmod diverges from Zend stubs. Observable fallout: pow(num: 2, exponent: 3) works on Zend and throws Error: Unknown named parameter $num on VM (base/exponent instead of num/exponent). fmod uses x/y instead of num1/num2. Return/param types for max/min/fdiv are also wrong or missing.
| Surface | Zend 8.2 (2026-07-30) | VM (2026-07-30) |
|---|---|---|
max |
(mixed): mixed value, ...mixed values |
(-): array value, ...values |
min |
(mixed): mixed value, ...mixed values |
(-): array|int value, ...values |
pow |
(object|int|float): mixed num, mixed exponent |
(float): float base, float exponent |
fdiv |
(float): float num1, float num2 |
(-): num1, num2 (untyped) |
fmod |
(float): float num1, float num2 |
(float): float x, float y |
pow(num:2, exponent:3) |
8 |
Error: Unknown named parameter $num |
Related open: #23259 (abs/floor/ceil number→num), #24825 (round) — this issue is the remaining max/min/pow/fdiv/fmod cluster.
php-src reference
- php/php-src
ext/standard/math.stub.php—pow/fdiv/fmod/hypot - php/php-src
ext/standard/basic_functions.stub.php—max/min
PHP implementation target
- Reflection/param-name tables for these builtins in
ext/standard/(+ VM Reflection registration) — match Zend names/types/variadics; PHP-in-PHP; no newruntime/*.c
Repro
./script/docker-exec.sh -- bash -lc 'php test/repro/maintainer_gap_max_min_pow_fdiv_reflection.php'
./script/docker-exec.sh -- bash -lc 'php bin/vm.php test/repro/maintainer_gap_max_min_pow_fdiv_reflection.php'Done when
- Reflection signatures match Zend for
max/min/pow/fdiv/fmod(names, types, variadic, returns) -
pow(num: 2, exponent: 3)andfmod(num1: …, num2: …)accept Zend named args - Compliance
.phptReflection + named-arg smoke - php-src-strict; no php-compiler-strict shortcut
Activity
PurHur commentedon Aug 5, 2026
Cleanup hygiene: closed duplicate #27794 (fmod-only Reflection
$x/$y→$num1/$num2). Prefer this broader math Reflection ticket. Related: #23306 still open forpow/sqrt/fmodname drift — keep both if scope differs (types vs names-only); do not re-file fmod-only.PurHur commentedon Aug 22, 2026
claim: compile-trust-lane-b — starting this run (lane overflow; #32122 closed, aot-smoke 8/8, #31968 children closed, no open AOT crash IR)
Stdlib: align max/min/pow/fdiv Reflection with Zend stubs (#25459) (#…
PurHur commentedon Aug 22, 2026
merged in #33875
verification:
lane overflow: #32122 closed, aot-smoke green, #31968 children closed; no open AOT crash IR this run.