attribute.target - Phpstan

Code example

php

<?php declare(strict_types = 1);

#[\Attribute(\Attribute::TARGET_PROPERTY)]
class MyPropertyAttribute
{
}

#[MyPropertyAttribute]
class Foo
{
}

Why is it reported?

PHP attributes declare which targets they can be applied to via the Attribute::TARGET_* flags. In the example above, MyPropertyAttribute is declared with TARGET_PROPERTY, meaning it can only be placed on class properties. Applying it to a class declaration is invalid and PHP will throw an Error at runtime when the attribute is instantiated via reflection.

How to fix it

Move the attribute to a valid target:

diff-php

 <?php declare(strict_types = 1);

 #[\Attribute(\Attribute::TARGET_PROPERTY)]
 class MyPropertyAttribute
 {
 }

-#[MyPropertyAttribute]
 class Foo
 {
+	#[MyPropertyAttribute]
+	public string $name;
 }

Or expand the allowed targets of the attribute class:

diff-php

 <?php declare(strict_types = 1);

-#[\Attribute(\Attribute::TARGET_PROPERTY)]
+#[\Attribute(\Attribute::TARGET_PROPERTY | \Attribute::TARGET_CLASS)]
 class MyPropertyAttribute
 {
 }

 #[MyPropertyAttribute]
 class Foo
 {
 }