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@psalm-readonly / @readonly on properties

Group: Advanced PHPDoc types · Category: ecosystem · File: phpdoc_advanced_psalm_readonly.php

Write allowed in the constructor; forbidden afterwards (including outside). References: - Psalm supported_annotations.md: @psalm-readonly and @readonly

Analyzer results

AnalyzerVersionResultDiagnostics
phan 6.0.7Phan 6.0.7 php-ast version 1.1.3 PHP version used to run Phan: 8.5.9 Not enforced

No diagnostics reported.

  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
phpstan 2.2.8PHPStan - PHP Static Analysis Tool 2.2.8 Not enforced reported Lv.3+
phpdoc_advanced_psalm_readonly.php:28: @readonly property Conformance\Tests\PhpdocAdvancedPsalmReadonly\Label::$text is assigned outside of its declaring class. [identifier=property.readOnlyByPhpDocAssignOutOfClass] [reported-from-level=3]
With strict-rules
phpdoc_advanced_psalm_readonly.php:28: @readonly property Conformance\Tests\PhpdocAdvancedPsalmReadonly\Label::$text is assigned outside of its declaring class. [identifier=property.readOnlyByPhpDocAssignOutOfClass]
  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
Expectation diff
Line 28: Expected valid value to be accepted, got ["@readonly property Conformance\\Tests\\PhpdocAdvancedPsalmReadonly\\Label::$text is assigned outside of its declaring class. [identifier=property.readOnlyByPhpDocAssignOutOfClass] [reported-from-level=3]"]
psalm 6.16.1Psalm 6.16.1@f1f5de594dc76faf8784e02d3dc4716c91c6f6ac
next: 7.0.0-beta19
Not enforced
phpdoc_advanced_psalm_readonly.php:28: Conformance\Tests\PhpdocAdvancedPsalmReadonly\Label::$text is marked readonly [InaccessibleProperty]
  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
Expectation diff
Line 28: Expected valid value to be accepted, got ["Conformance\\Tests\\PhpdocAdvancedPsalmReadonly\\Label::$text is marked readonly [InaccessibleProperty]"]
mago 1.46.0mago 1.46.0 Not enforced
phpdoc_advanced_psalm_readonly.php:28: Cannot write to protected property `$text` on class `Conformance\Tests\PhpdocAdvancedPsalmReadonly\Label`. [invalid-property-write]
  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
Expectation diff
Line 28: Expected valid value to be accepted, got ["Cannot write to protected property `$text` on class `Conformance\\Tests\\PhpdocAdvancedPsalmReadonly\\Label`. [invalid-property-write]"]
mir 0.70.1mir 0.70.1 Not enforced
phpdoc_advanced_psalm_readonly.php:28: ReadonlyPropertyAssignment: Cannot assign to readonly property Conformance\Tests\PhpdocAdvancedPsalmReadonly\Label::$text outside of constructor [MIR0600]
  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
Expectation diff
Line 28: Expected valid value to be accepted, got ["ReadonlyPropertyAssignment: Cannot assign to readonly property Conformance\\Tests\\PhpdocAdvancedPsalmReadonly\\Label::$text outside of constructor [MIR0600]"]
phpantom 0.9.0phpantom_lsp 0.9.0 Not enforced

No diagnostics reported.

  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
intelephense 1.18.5intelephense 1.18.5 Not enforced

No diagnostics reported.

  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
phpy 0.2.0phpy 0.2.0 Not enforced
phpdoc_advanced_psalm_readonly.php:28: Cannot modify readonly property Conformance\Tests\PhpdocAdvancedPsalmReadonly\Label::$text
  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
Expectation diff
Line 28: Expected valid value to be accepted, got ["Cannot modify readonly property Conformance\\Tests\\PhpdocAdvancedPsalmReadonly\\Label::$text"]
qodana 262.8665.325Qodana 262.8665.325 Not enforced

No diagnostics reported.

  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations 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.

  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
steins 0.1.5steins 0.1.5 (2026-08-12 revision 39b4cc1) Not enforced

No diagnostics reported.

  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
phpstan-strict 2.2.8PHPStan - PHP Static Analysis Tool 2.2.8 Not enforced
phpdoc_advanced_psalm_readonly.php:28: @readonly property Conformance\Tests\PhpdocAdvancedPsalmReadonly\Label::$text is assigned outside of its declaring class. [identifier=property.readOnlyByPhpDocAssignOutOfClass]
  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
Expectation diff
Line 28: Expected valid value to be accepted, got ["@readonly property Conformance\\Tests\\PhpdocAdvancedPsalmReadonly\\Label::$text is assigned outside of its declaring class. [identifier=property.readOnlyByPhpDocAssignOutOfClass]"]
psalm-next 7.0.0-beta19Psalm 7.0.0-beta19@7e751c06a756fa64dc4c759c09fe4a173afcb433 Not enforced
phpdoc_advanced_psalm_readonly.php:28: Conformance\Tests\PhpdocAdvancedPsalmReadonly\Label::$text is marked readonly [InaccessibleProperty]
  • Recognition: spelling resolved
  • Enforcement: 0/1 of the expected violations reported
Expectation diff
Line 28: Expected valid value to be accepted, got ["Conformance\\Tests\\PhpdocAdvancedPsalmReadonly\\Label::$text is marked readonly [InaccessibleProperty]"]

Source

<?php

declare(strict_types=1);

namespace Conformance\Tests\PhpdocAdvancedPsalmReadonly;

/**
 * Cross-tool handling of `@psalm-readonly` / `@readonly` on properties.
 *
 * Write allowed in the constructor; forbidden afterwards (including outside).
 *
 * References:
 * - Psalm supported_annotations.md: `@psalm-readonly` and `@readonly`
 */

final class Label
{
    /** @psalm-readonly */
    public string $text; // T: @psalm-readonly

    public function __construct(string $text)
    {
        $this->text = $text; // V
    }
}

$label = new Label('ok');
echo $label->text; // V
$label->text = 'no'; // E?: @psalm-readonly property assigned outside constructor