Awkward error using first-class callable syntax with missing function

Description

The following code:

<?php

'missing'(...);

Resulted in this output:

Fatal error: Uncaught Error: Call to undefined function missing() 

But I expected this output instead:

Fatal error: Uncaught Error: Unable to create closure from undefined function missing() 

When using the first-class callable syntax on a missing function, the error message claims the user is calling a function. However, this should only be creating a closure.

I thought the (...) syntax would only try to create a closure. Does it actually try to call the function with a ... argument if it's not found?

If you use the original Closure::fromCallable() method, the error is different.

Closure::fromCallable('missing');

Uncaught TypeError: Failed to create closure from callable: function "missing" not found or invalid function name

PHP Version

8.1

Operating System

No response

まず、'missing'(...); を使った PHP 8.1 の例を再現し、そのエラーを Closure::fromCallable('missing') と比較します。未定義の関数に対する first-class callable の処理を追跡します。構文が関数が呼び出されたと主張するのではなく、クロージャ作成エラーを報告すれば完了です。