Error Identifier: classConstant.nativeTypeNotSupported
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);
class Foo
{
const string VERSION = '1.0';
}
Why is it reported? #
Native types for class constants were introduced in PHP 8.3. Using typed class constants with an earlier PHP version results in a syntax error. PHPStan reports this when the configured PHP version does not support this feature.
How to fix it #
If upgrading to PHP 8.3 or later is not possible, remove the native type from the constant declaration:
<?php declare(strict_types = 1);
class Foo
{
- const string VERSION = '1.0';
+ const VERSION = '1.0';
}
A PHPDoc type can be used instead to document the expected type without requiring PHP 8.3:
<?php declare(strict_types = 1);
class Foo
{
- const string VERSION = '1.0';
+ /** @var string */
+ const VERSION = '1.0';
}
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.