Hi
Am 2025-07-24 12:03, schrieb Tim Düsterhus:
I don't think they should. Specifically the (1) and (3) should not. My
expectation is that:
$f = foo(a: ?, b: 2, c: ?);
$f(1, 3); // calls foo(1, 2, 3);
and
$f = foo(c: ?, b: 2, a: ?);
$f(1, 3); // calls foo(3, 2, 1);
The order of the question marks should match the order of the
parameters in the resulting Closure, which is not necessarily the order
of the order parameters of the original function.
To add to that: By respecting the order of question marks as written, it
would also make PFA easier to understand and also more powerful. After
sending the email earlier, I came across this doctrine/collections PR,
while reviewing some dependency upgrades:
https://github.com/doctrine/collections/pull/424
When migrating the `findFirst()` method from a custom foreach loop to
`array_find()`, they couldn't pass along the given callable directly,
since Doctrine opted for a different parameter order. Thus they needed
an intermediate Closure to swap the arguments. If the argument names for
the function are known (which they are not in the Doctrine example, as
it's an arbitrary Closure that is given), this would allow to swap
arguments as necessary:
function cb($key, $val) { … }
array_find($array, cb(val: ?, key: ?)); // array_find expects
$value, $key.
Best regards
Tim Düsterhus
