falsestring|false the standard library returns.
Native since 8.2, like true. The probes are the opposite literal and a bool
of unknown value.
References:
- PHPStan TypeNodeResolver false resolves to a constant boolean type| Analyzer | Version | Result | Diagnostics |
|---|---|---|---|
| phan | 6.0.7Phan 6.0.7 php-ast version 1.1.3 PHP version used to run Phan: 8.5.9 | Partly enforced (1/2) | phpdoc_advanced_fallback_false.php:45: Argument 1 ($value) is true of type true but \Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse() takes false defined at /Users/megurine/repo/php/php-typing-conformance/conformance/tests/phpdoc_advanced_fallback_false.php:34 [PhanTypeMismatchArgument]
|
| phpstan | 2.2.8PHPStan - PHP Static Analysis Tool 2.2.8 | Enforced reported Lv.5+ | phpdoc_advanced_fallback_false.php:45: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, true given. [identifier=argument.type] [reported-from-level=5] phpdoc_advanced_fallback_false.php:50: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, bool given. [identifier=argument.type] [reported-from-level=5] With strict-rulesphpdoc_advanced_fallback_false.php:45: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, true given. [identifier=argument.type] phpdoc_advanced_fallback_false.php:50: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, bool given. [identifier=argument.type]
|
| psalm | 6.16.1Psalm 6.16.1@f1f5de594dc76faf8784e02d3dc4716c91c6f6ac next: 7.0.0-beta19 |
Enforced | phpdoc_advanced_fallback_false.php:45: Argument 1 of Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, but true provided [InvalidArgument] phpdoc_advanced_fallback_false.php:50: Argument 1 of Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, but bool provided [InvalidArgument]
|
| mago | 1.46.0mago 1.46.0 | Enforced | phpdoc_advanced_fallback_false.php:45: Invalid argument type for argument #1 of `Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse`: expected `false`, but found `true`. [invalid-argument] phpdoc_advanced_fallback_false.php:50: Possible argument type mismatch for argument #1 of `Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse`: expected `false`, but possibly received `bool`. [possibly-invalid-argument]
|
| mir | 0.70.1mir 0.70.1 | Partly enforced (1/2) | phpdoc_advanced_fallback_false.php:45: InvalidArgument: Argument $value of acceptsFalse() expects 'false', got 'true' [MIR0201]
|
| phpantom | 0.9.0phpantom_lsp 0.9.0 | Not enforced | No diagnostics reported.
|
| intelephense | 1.18.5intelephense 1.18.5 | Widened to bool | No diagnostics reported.
|
| phpy | 0.2.0phpy 0.2.0 | Not enforced | No diagnostics reported.
|
| qodana | 262.8665.325Qodana 262.8665.325 | Partly enforced (1/2) | phpdoc_advanced_fallback_false.php:45: Parameter 'true' type is not compatible with declaration [PhpParamsInspection]
|
| noverify | 0.5.5NoVerify, version 0.5.5: built on: 2025.04.22 14:36:46 OS: r-kuchinskas arm64 Commit: 4774b82f8adc53fbef38f95e97af4b953b4d1529 | Enforced | phpdoc_advanced_fallback_false.php:45: potentially not safe access in parameter value of function Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse [notSafeCall] phpdoc_advanced_fallback_false.php:50: potentially not safe call in function Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse signature of param value [notSafeCall]
|
| steins | 0.1.5steins 0.1.5 (2026-08-12 revision 39b4cc1) | Partly enforced (1/2) | phpdoc_advanced_fallback_false.php:45: argument true to acceptsFalse() violates declared @param false $value — declared contract violation [phpdoc.param-mismatch]
Notes: The residual line (50: forwarding an unconstrained bool $value into the false-typed param) is correct zero-FP silence, not a gap — Base::Bool carries no refinement, so the fact is genuinely Maybe against LitBool(false) and steins-infer only reports on Certainty::No. |
| phpstan-strict | 2.2.8PHPStan - PHP Static Analysis Tool 2.2.8 | Enforced | phpdoc_advanced_fallback_false.php:45: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, true given. [identifier=argument.type] phpdoc_advanced_fallback_false.php:50: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, bool given. [identifier=argument.type]
|
| psalm-next | 7.0.0-beta19Psalm 7.0.0-beta19@7e751c06a756fa64dc4c759c09fe4a173afcb433 | Enforced | phpdoc_advanced_fallback_false.php:45: Argument 1 of Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, but true provided [InvalidArgument] phpdoc_advanced_fallback_false.php:50: Argument 1 of Conformance\Tests\PhpdocAdvancedFallbackFalse\acceptsFalse expects false, but bool provided [InvalidArgument]
|
<?php
declare(strict_types=1);
namespace Conformance\Tests\PhpdocAdvancedFallbackFalse;
/**
* `false`
*
* The other constant boolean type, and the one PHP has always had a use for:
* it is the failure half of every `string|false` the standard library returns.
* Native since 8.2, like `true`. The probes are the opposite literal and a bool
* of unknown value.
*
* References:
* - PHPStan TypeNodeResolver `false` resolves to a constant boolean type
*/
/**
* @return false
*/
function returnsFalse() // T: false
{
return false; // V
}
function acceptsBool(bool $value): void
{
}
/**
* @param false $value
*/
function acceptsFalse($value): void // T: false
{
}
// A `false` value always satisfies a native `bool` parameter.
acceptsBool(returnsFalse()); // V
// The literal satisfies the parameter.
acceptsFalse(false); // V
// The opposite literal does not.
acceptsFalse(true); // E?: true is not the literal type false
function forwardsRuntimeBool(bool $value): void
{
// Neither does a bool whose value is not known.
acceptsFalse($value); // E?: bool is wider than the literal type false
}