Error Identifier: parameter.variadic
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);
class Foo
{
public function doFoo(int $i, string $j): void
{
}
}
class Bar extends Foo
{
public function doFoo(int ...$i): void
{
}
}
Why is it reported? #
The overriding method declares a parameter as variadic (...), but the corresponding parameter in the parent method is not variadic. In the example above, Bar::doFoo() declares ...$i as variadic, while Foo::doFoo() declares $i as a regular parameter.
This changes the method signature in a way that is incompatible with the parent. A variadic parameter accepts zero or more arguments, while the parent method expects a fixed number of arguments at specific positions.
How to fix it #
Match the parent method’s parameter list instead of using a variadic parameter:
class Bar extends Foo
{
- public function doFoo(int ...$i): void
+ public function doFoo(int $i, string $j): void
{
}
}
How to ignore this error #
You can use the identifier parameter.variadic to ignore this error using a comment:
// @phpstan-ignore parameter.variadic
codeThatProducesTheError();You can also use only the identifier key to ignore all errors of the same type in your configuration file in the ignoreErrors parameter:
parameters:
ignoreErrors:
-
identifier: parameter.variadic