Calling class method with unnecessary parameters does not throw exception

[fazliddin]

Description

The following code:

final class Actions
{
...
    public function add(string $pageName, Action|string $actionNameOrObject): self
    {
        return $this->doAddAction($pageName, $actionNameOrObject);
    }
...
}

$obj = new Actions;
$obj->add(Crud::PAGE_EDIT, Action::SAVE_AND_CONTINUE, function (Action $action)
{
    return $action->setIcon(false)->setLabel(false);
})

Resulted in this output:

No error is shown

But I expected this output instead:

Method add does not have third parameter

PHP Version

PHP 8.2.27

Operating System

Ubuntu 22.04

[MorganLOCode]

This has always been true of any user-defined function; they're available through functions such as func_get_args.

[fazliddin]

But I did not use ...$arg notion, and such silent behavior makes debugging hard.

[nielsdos]

That's true. This is allowed even without a variadic parameter for BC reasons, as func_get_args predates variadics.
Changing this would need an RFC.

[Disservin]

https://bugs.php.net/bug.php?id=13892

[iluuu1994]

As explained, this is not a bug. Changing this has large userland implications and thus likely requires not only an RFC but also a multi-year migration path.