attribute.notAttribute

Code example

<?php declare(strict_types = 1);

class MyClass
{
}

#[MyClass]
class Foo
{
}

Why is it reported?

A class is used as a PHP attribute, but it is not declared as an attribute class. In PHP 8.0+, a class must be marked with the built-in #[\Attribute] attribute to be usable as an attribute. Without this declaration, PHP will throw an error at runtime.

In the example above, MyClass is used as #[MyClass] but is not annotated with #[\Attribute].

How to fix it

Add the #[\Attribute] declaration to the class:

 <?php declare(strict_types = 1);

+#[\Attribute]
 class MyClass
 {
 }

 #[MyClass]
 class Foo
 {
 }

If the class was not intended to be used as an attribute, remove the attribute usage:

 <?php declare(strict_types = 1);

 class MyClass
 {
 }

-#[MyClass]
 class Foo
 {
 }