---
title: "classConstant.internalTrait"
shortDescription: "Accessing a constant defined in a trait marked as @internal."
ignorable: true
---

## Code example

```php
<?php declare(strict_types = 1);

namespace Vendor {
	/** @internal */
	trait InternalTrait {
		public const VALUE = 42;
	}
}

namespace App {
	function test(): int {
		return \Vendor\InternalTrait::VALUE; // error: Access to constant VALUE of internal trait Vendor\InternalTrait from outside its root namespace Vendor.
	}
}
```

## Why is it reported?

The constant is defined on a trait that is marked as `@internal`. Internal types are not part of the package's public API and may change or be removed without notice. Accessing constants on internal traits from outside their package creates a fragile dependency.

## How to fix it

Use a public (non-internal) constant or API instead. If no public alternative exists, consider reaching out to the package maintainers to request a public API for your use case.

```diff-php
 namespace App {
 	function test(): int {
-		return \Vendor\InternalTrait::VALUE;
+		return \Vendor\PublicClass::VALUE;
 	}
 }
```
