use.nameInUse

Code example

<?php declare(strict_types = 1);

namespace App;

class Foo
{
}

use SomeOtherNamespace\Foo;

Why is it reported?

A use import introduces a name that is already taken by another declaration in the same namespace scope. In the example, the class Foo is declared in the App namespace, and then a use statement tries to import SomeOtherNamespace\Foo as Foo. This creates a naming conflict that PHP cannot resolve.

This is a PHP compile-time error -- having two definitions for the same name in the same scope is not allowed.

How to fix it

Use an alias for the imported name to avoid the conflict:

 <?php declare(strict_types = 1);

 namespace App;

 class Foo
 {
 }

-use SomeOtherNamespace\Foo;
+use SomeOtherNamespace\Foo as OtherFoo;

Or remove the conflicting use statement if it is not needed:

 <?php declare(strict_types = 1);

 namespace App;

 class Foo
 {
 }
-
-use SomeOtherNamespace\Foo;