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Stdlib: usort()/uasort()/uksort() — named array:/callback: rejected (ext/standard/array.c) #10048
Description
Category
stdlib · php-src-strict
Problem
Zend accepts PHP 8+ named arguments on user-sort builtins: usort(array: $a, callback: ...), uasort(...), uksort(...).
This compiler rejects callback: / array: with Error: Unknown named parameter at runtime. Enum key preservation in sort callbacks is tracked separately in #8867 / #9075.
php-src reference
- php/php-src
ext/standard/array.c—PHP_FUNCTION(usort),uasort,uksort - php/php-src
ext/standard/basic_functions.stub.php
Repro (failure today)
<?php
$a = [3, 1, 2];
usort(array: $a, callback: fn ($x, $y) => $x <=> $y);
var_export($a);
$b = ['b' => 2, 'a' => 1];
uasort(array: $b, callback: fn ($x, $y) => $x <=> $y);
var_export($b);Also: test/repro/named_uasort.php, test/repro/maintainer_probe_named_params.php (usort probe)
./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && php bin/vm.php test/repro/named_uasort.php'
# Fatal: Unknown named parameter $callback| Call | Zend PHP 8+ | VM today |
|---|---|---|
usort(array: $a, callback: $fn) |
sorted array | Unknown named parameter ❌ |
usort($a, $fn) positional |
sorted array | OK ✅ |
Scope (this repo)
| Path | Work |
|---|---|
ext/standard/usort.php, uasort.php, uksort.php |
Builtin arginfo / named aliases |
lib/Compiler.php named-arg binding |
Wire array (by-ref) + callback slots |
| Tests | compliance PHPTs for named array/callback on each sort builtin |
PHP-in-PHP first — no new runtime/*.c.
Done when
- Repro green under VM (php-src-strict)
- By-ref
array:binding preserves Zend write-back semantics
Verification
./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && php bin/vm.php test/repro/named_uasort.php'
Activity
PurHur commentedon Jun 24, 2026
claim: cursor-agent-lane-b — batch (issues #9646, #10048) — compiler BuiltinParamNames named-arg registration; not ext/standard runtime scope despite stdlib label
Fix usort/uasort/uksort callback named params in BuiltinParamNames (#…
PurHur commentedon Jun 24, 2026
Merged via #11090
Fix:
BuiltinParamNamesmapsusort/uasort/uksorttoarray+callback(notflags).Verification:
test/repro/named_uasort.php+usort_named_callback.phptgreen in Docker.