@phpstan-pureecho that contradicts the claim. That makes it the one
prefixed tag whose probe is inside the annotated declaration.
References:
- PHPStan phpdocs-basics: @phpstan-pure / @phpstan-impure
- Psalm supported_annotations.md: @psalm-pure| 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 | Not enforced | No diagnostics reported.
|
| phpstan | 2.2.8PHPStan - PHP Static Analysis Tool 2.2.8 | Enforced reported Lv.2+ | phpdoc_advanced_vendor_prefixed_pure_phpstan.php:26: Impure echo in pure function Conformance\Tests\PhpdocAdvancedVendorPrefixedPurePhpStan\claimsPure(). [identifier=impure.echo] [reported-from-level=2] With strict-rulesphpdoc_advanced_vendor_prefixed_pure_phpstan.php:26: Impure echo in pure function Conformance\Tests\PhpdocAdvancedVendorPrefixedPurePhpStan\claimsPure(). [identifier=impure.echo]
|
| psalm | 6.16.1Psalm 6.16.1@f1f5de594dc76faf8784e02d3dc4716c91c6f6ac next: 7.0.0-beta19 |
Enforced | phpdoc_advanced_vendor_prefixed_pure_phpstan.php:26: Cannot call echo from a mutation-free context [ImpureFunctionCall]
|
| mago | 1.46.0mago 1.46.0 | Enforced | phpdoc_advanced_vendor_prefixed_pure_phpstan.php:26: Impure use of `echo` in a pure context. [impure-construct]
|
| mir | 0.70.1mir 0.70.1 | Enforced | phpdoc_advanced_vendor_prefixed_pure_phpstan.php:26: ImpureFunctionCall: Calling impure function echo() in a @pure function [MIR1704]
|
| phpantom | 0.9.0phpantom_lsp 0.9.0 | Not enforced | No diagnostics reported.
|
| intelephense | 1.18.5intelephense 1.18.5 | Not enforced | No diagnostics reported.
|
| phpy | 0.2.0phpy 0.2.0 | Not enforced | No diagnostics reported.
|
| qodana | 262.8665.325Qodana 262.8665.325 | 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 | 0.1.5steins 0.1.5 (2026-08-12 revision 39b4cc1) | Enforced | phpdoc_advanced_vendor_prefixed_pure_phpstan.php:26: echo has effect io.output.buffer, but claimsPure() is declared @phpstan-pure [effect.envelope-exceeded]
|
| phpstan-strict | 2.2.8PHPStan - PHP Static Analysis Tool 2.2.8 | Enforced | phpdoc_advanced_vendor_prefixed_pure_phpstan.php:26: Impure echo in pure function Conformance\Tests\PhpdocAdvancedVendorPrefixedPurePhpStan\claimsPure(). [identifier=impure.echo]
|
| psalm-next | 7.0.0-beta19Psalm 7.0.0-beta19@7e751c06a756fa64dc4c759c09fe4a173afcb433 | Enforced | phpdoc_advanced_vendor_prefixed_pure_phpstan.php:26: The context is pure but echo is impure [ImpureFunctionCall]
|
<?php
declare(strict_types=1);
namespace Conformance\Tests\PhpdocAdvancedVendorPrefixedPurePhpStan;
/**
* Cross-tool handling of `@phpstan-pure`
*
* The tag claims a function has no side effects, and unlike the other tags here
* it is checked against the *body* rather than used at a call site: honouring it
* means reporting the `echo` that contradicts the claim. That makes it the one
* prefixed tag whose probe is inside the annotated declaration.
*
* References:
* - PHPStan phpdocs-basics: @phpstan-pure / @phpstan-impure
* - Psalm supported_annotations.md: @psalm-pure
*/
/**
* @phpstan-pure
*/
function claimsPure(int $value): int // T: @phpstan-pure
{
// The claim and the body disagree: honouring the tag means saying so.
echo 'side effect'; // E?: an echo contradicts @phpstan-pure
return $value + 1; // V
}
echo claimsPure(1);