@psalm-immutable$this.
References:
- Psalm supported_annotations.md: @psalm-immutable| Analyzer | Version | Result | Diagnostics |
|---|---|---|---|
| phan | 6.0.10Phan 6.0.10 php-ast version 1.1.3 PHP version used to run Phan: 8.5.11 | Not enforced | No diagnostics reported.
|
| phpstan | 2.3.1PHPStan - PHP Static Analysis Tool 2.3.1 | Enforced reported Lv.3+ | phpdoc_advanced_psalm_immutable.php:29: @readonly property Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is assigned outside of the constructor. [reported-from-level=3] phpdoc_advanced_psalm_immutable.php:35: @readonly property Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is assigned outside of its declaring class. [reported-from-level=3] With strict-rulesphpdoc_advanced_psalm_immutable.php:29: @readonly property Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is assigned outside of the constructor. phpdoc_advanced_psalm_immutable.php:35: @readonly property Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is assigned outside of its declaring class.
|
| psalm | 6.20.0Psalm 6.20.0@804f03c0c183d149fcd4b8c7c0c9b3fbf836d34c next: 7.0.0-rc2 |
Enforced | phpdoc_advanced_psalm_immutable.php:29: Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is marked readonly [InaccessibleProperty] phpdoc_advanced_psalm_immutable.php:35: Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is marked readonly [InaccessibleProperty]
|
| mago | 1.57.0mago 1.57.0 | Not enforced | No diagnostics reported.
|
| mir | 0.87.0mir 0.87.0 | Enforced | phpdoc_advanced_psalm_immutable.php:29: ImmutablePropertyModification: Assigning to property label of $this in an immutable context (@psalm-immutable class or @psalm-mutation-free method) [MIR1705] phpdoc_advanced_psalm_immutable.php:35: ImmutablePropertyModification: Assigning to property label of $point in an immutable context (@psalm-immutable class or @psalm-mutation-free method) [MIR1705]
|
| phpantom | 0.11.1phpantom_lsp 0.11.1 | Not enforced | No diagnostics reported.
|
| intelephense | 1.18.5intelephense 1.18.5 | Not enforced | No diagnostics reported.
|
| phpactor | 2026.10.07.0Phpactor 2026.10.07.0 | Not enforced | No diagnostics reported.
|
| phpy | 1.0.19409phpy 1.0.19409 | Not enforced | No diagnostics reported.
|
| qodana | 262.10968.76PhpStorm 262.10968.76 | Not enforced | No diagnostics reported.
|
| noverify | 0.5.5NoVerify, version 0.5.5: built on: 2025.04.22 14:36:46 OS: r-kuchinskas arm64 Commit: 4774b82f8adc53fbef38f95e97af4b953b4d1529 | Not enforced | No diagnostics reported.
|
| steins | 0.1.8steins 0.1.8 (2026-09-21 revision 76306a9) | Not enforced | No diagnostics reported.
|
| phpstan-strict | 2.3.1PHPStan - PHP Static Analysis Tool 2.3.1 | Enforced | phpdoc_advanced_psalm_immutable.php:29: @readonly property Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is assigned outside of the constructor. phpdoc_advanced_psalm_immutable.php:35: @readonly property Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is assigned outside of its declaring class.
|
| psalm-next | 7.0.0-rc2Psalm 7.0.0-rc2@20339e3fe5b8d03bcd8061030eb2a83ad50e5783 | Enforced | phpdoc_advanced_psalm_immutable.php:29: Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is marked readonly [InaccessibleProperty] phpdoc_advanced_psalm_immutable.php:29: The context is read-props but property assignment to Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label requires write-this-props [ImpurePropertyAssignment] phpdoc_advanced_psalm_immutable.php:35: Conformance\Tests\PhpdocAdvancedPsalmImmutable\Point::$label is marked readonly [InaccessibleProperty]
|
<?php
declare(strict_types=1);
namespace Conformance\Tests\PhpdocAdvancedPsalmImmutable;
/**
* Cross-tool handling of `@psalm-immutable`.
*
* Class-level immutability: public properties behave as readonly for consumers
* and non-constructor methods must not mutate `$this`.
*
* References:
* - Psalm supported_annotations.md: `@psalm-immutable`
*/
/**
* @psalm-immutable
*/
final class Point // T: @psalm-immutable
{
public function __construct(
public string $label,
) {
}
public function relabel(string $label): void
{
$this->label = $label; // E?: mutation inside immutable class method
}
}
$point = new Point('origin'); // V
echo $point->label; // V
$point->label = 'moved'; // E?: immutable property assigned outside constructor