Error Identifier: use.nameInUse
Every error reported by PHPStan has an error identifier. Here’s a list of all error identifiers. In PHPStan Pro you can see the error identifier next to each error and filter errors by their identifiers.
Code example #
<?php declare(strict_types = 1);
namespace App;
use SomeOtherNamespace\Foo;
class 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 use statement imports SomeOtherNamespace\Foo as Foo, but there is also a class named Foo declared in the same namespace. 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;
-use SomeOtherNamespace\Foo;
+use SomeOtherNamespace\Foo as OtherFoo;
class Foo
{
}
Or remove the conflicting use statement if it is not needed:
<?php declare(strict_types = 1);
namespace App;
-use SomeOtherNamespace\Foo;
-
class Foo
{
}
Non-ignorable error #
This error cannot be ignored using @phpstan-ignore or the ignoreErrors configuration. Non-ignorable errors indicate code that would cause a crash or a fatal error at runtime, or a fundamental problem in the analysed code that must be addressed.
Rules that report this error #
- PHPStan\Rules\Names\UsedNamesRule [1]