Error Identifier: constant.attributesNotSupported

Every error reported by PHPStan has an error identifier. Here’s a list of all error identifiers. In PHPStan Pro you can see the error identifier next to each error and filter errors by their identifiers.

Code example #

<?php declare(strict_types = 1);

// Analysed with PHP version set to < 8.5

#[\Attribute(\Attribute::TARGET_CONSTANT)]
class MyAttr {}

#[MyAttr]
const FOO = 1; // error

Why is it reported? #

Attributes on global constants are a feature introduced in PHP 8.5. When the configured PHP version for analysis is lower than 8.5, placing attributes on global constants is not supported and will result in a runtime error.

How to fix it #

If you need attributes on global constants, set the phpVersion parameter in your PHPStan configuration to 8.5 or later:

parameters:
    phpVersion: 80500

Alternatively, if you cannot upgrade, avoid using attributes on global constants and consider using class constants instead, which support attributes since PHP 8.0:

 <?php declare(strict_types = 1);
 
-#[MyAttr]
-const FOO = 1;
+class Config
+{
+    #[MyAttr]
+    const FOO = 1;
+}

Non-ignorable error #

This error cannot be ignored using @phpstan-ignore or the ignoreErrors configuration. Non-ignorable errors indicate code that would cause a crash or a fatal error at runtime, or a fundamental problem in the analysed code that must be addressed.

Rules that report this error #

PHPStan\Rules\Constants\ConstantAttributesRule [1]

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