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Historical compatibility for legacy nullable-via-default patterns

Group: Historical and legacy behavior · Category: historical · File: historical_nullable_array_default_null.php

References: - python-typing historical/deprecated groups inspiration - legacy PHP ecosystem usage before explicit nullable types were common

Analyzer results

AnalyzerVersionResultDiagnostics
phan 6.0.10Phan 6.0.10 php-ast version 1.1.3 PHP version used to run Phan: 8.5.11 Pass

No diagnostics reported.

phpstan 2.3.1PHPStan - PHP Static Analysis Tool 2.3.1 Pass

No diagnostics reported.

psalm 6.20.0Psalm 6.20.0@804f03c0c183d149fcd4b8c7c0c9b3fbf836d34c
next: 7.0.0-rc2
Pass

No diagnostics reported.

mago 1.57.0mago 1.57.0 Pass

No diagnostics reported.

mir 0.87.0mir 0.87.0 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 1.0.19409phpy 1.0.19409 Pass

No diagnostics reported.

qodana 262.10968.76PhpStorm 262.10968.76 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 Fail
historical_nullable_array_default_null.php:18: param $values miss matched with phpdoc type <<array<int>|null>> [funcParamTypeMissMatch]
Expectation diff
Line 18: Unexpected errors ["param $values miss matched with phpdoc type <<array<int>|null>> [funcParamTypeMissMatch]"]
steins 0.1.8steins 0.1.8 (2026-09-21 revision 76306a9) Pass

No diagnostics reported.

phpstan-strict 2.3.1PHPStan - PHP Static Analysis Tool 2.3.1 Pass

No diagnostics reported.

psalm-next 7.0.0-rc2Psalm 7.0.0-rc2@20339e3fe5b8d03bcd8061030eb2a83ad50e5783 Pass

No diagnostics reported.

Source

<?php

declare(strict_types=1);

namespace Conformance\Tests\HistoricalNullableArrayDefaultNull;

/**
 * Historical compatibility for legacy nullable-via-default patterns.
 *
 * References:
 * - python-typing historical/deprecated groups inspiration
 * - legacy PHP ecosystem usage before explicit nullable types were common
 */

/**
 * @param array<int>|null $values
 */
function legacyNullableArray(?array $values = null): void
{
}

legacyNullableArray();
legacyNullableArray([1, 2, 3]);