class.extendsTrait

Code example

<?php declare(strict_types = 1);

trait SomeTrait
{

}

class Foo extends SomeTrait // reported
{

}

Why is it reported?

A class cannot extend a trait. Traits are designed for horizontal code reuse via the use keyword inside a class body, not for inheritance via extends. Attempting to extend a trait results in a fatal error at runtime.

How to fix it

Use the trait inside the class body with the use keyword instead of extending it.

-class Foo extends SomeTrait
+class Foo
 {
+    use SomeTrait;
 }