listarray{0: string, 1: string} and array{string, string} describe the same values — a
two-element list of strings — and both should satisfy a list<string> parameter.
Per the cross-tool survey (#14939) analyzers diverge on whether the *explicit-key*
spelling counts as a list, even though the keyless spelling agrees.
Reference: phpstan#14939| Analyzer | Version | Result | Diagnostics |
|---|---|---|---|
| phan | 6.0.11Phan 6.0.11 php-ast version 1.1.3 PHP version used to run Phan: 8.5.11 | Pass | No diagnostics reported. |
| phpstan | 2.3.5PHPStan - PHP Static Analysis Tool 2.3.5 | Pass | No diagnostics reported. |
| psalm | 6.20.9Psalm 6.20.9@f67170ac3c3b931f5088681e21d6c8babc601c08 next: 7.0.4 |
Pass | regressions_explicit_key_shape_is_list.php:27: Argument 1 of Conformance\Tests\RegressionsExplicitKeyShapeIsList\takesList expects list<string>, but parent type array{0: string, 1: string} provided [ArgumentTypeCoercion] |
| mago | 1.59.0mago 1.59.0 | Pass | No diagnostics reported. |
| mir | 0.91.0mir 0.91.0 | Pass | No diagnostics reported. |
| phpantom | 0.11.1phpantom_lsp 0.11.1 | Pass | No diagnostics reported. |
| intelephense | 1.18.5intelephense 1.18.5 | Pass | No diagnostics reported. |
| phpactor | 2026.10.07.0Phpactor 2026.10.07.0 | Pass | No diagnostics reported. |
| phpy | 1.0.19490phpy 1.0.19490 | Pass | No diagnostics reported. |
| qodana | 262.11879.104PhpStorm 262.11879.104 | Pass | No diagnostics reported. |
| noverify | 0.5.5NoVerify, version 0.5.5: built on: 2025.04.22 14:36:46 OS: r-kuchinskas arm64 Commit: 4774b82f8adc53fbef38f95e97af4b953b4d1529 | Pass | regressions_explicit_key_shape_is_list.php:19: param $list miss matched with phpdoc type <<list<string>>> [funcParamTypeMissMatch]
regressions_explicit_key_shape_is_list.php:25: param $shape miss matched with phpdoc type <<array{0: string, 1: string}>> [funcParamTypeMissMatch]
regressions_explicit_key_shape_is_list.php:31: param $shape miss matched with phpdoc type <<array{string, string}>> [funcParamTypeMissMatch] |
| steins | 0.1.8steins 0.1.8 (2026-09-21 revision 76306a9) | Pass | No diagnostics reported. |
| phpstan-strict | 2.3.5PHPStan - PHP Static Analysis Tool 2.3.5 | Pass | No diagnostics reported. |
| psalm-next | 7.0.4Psalm 7.0.4@fa5b1f6e665cb743838ffd865b8fc96207f9409f | Pass | regressions_explicit_key_shape_is_list.php:27: Argument 1 of Conformance\Tests\RegressionsExplicitKeyShapeIsList\takesList expects list<string>, but parent type array{0: string, 1: string} provided [ArgumentTypeCoercion] |
<?php
declare(strict_types=1);
namespace Conformance\Tests\RegressionsExplicitKeyShapeIsList;
/**
* Explicit-integer-key sealed shape as a `list`.
*
* `array{0: string, 1: string}` and `array{string, string}` describe the same values — a
* two-element list of strings — and both should satisfy a `list<string>` parameter.
* Per the cross-tool survey (#14939) analyzers diverge on whether the *explicit-key*
* spelling counts as a list, even though the keyless spelling agrees.
*
* Reference: https://github.com/phpstan/phpstan/discussions/14939
*/
/** @param list<string> $list */
function takesList(array $list): void // E<noverify>: NoVerify cannot evaluate the list<string> param type
{
echo count($list);
}
/** @param array{0: string, 1: string} $shape */
function fromExplicitKeys(array $shape): void // E<noverify>: NoVerify cannot evaluate the array shape param type
{
takesList($shape); // E<psalm>: Psalm treats the explicit-key shape array{0: string, 1: string} as not directly list<string> and reports ArgumentTypeCoercion // E<pzoom>: same ArgumentTypeCoercion as Psalm. PHPStan, Mago, and Phan accept it (#14939)
}
/** @param array{string, string} $shape */
function fromKeyless(array $shape): void // E<noverify>: NoVerify cannot evaluate the array shape param type
{
takesList($shape); // the keyless spelling is accepted by every tool, including Psalm
}