Description

The following code allows the configuration of \array as a custom (anonymous) class.

<?php

$a = new class() {};

class_alias($a::class, \array::class);

function foo(\array $x) {
    print_r($x);
}

foo($a);

?>

Resulted in this output (see https://3v4l.org/Wsb8F)

class@anonymous Object
(
)

But I expected this output instead:

Cannot use 'array' as class name as it is reserved 
Type declaration 'array' must be unqualified

As a side note, callable has the same behavior as 'array' and should be aligned.

PHP Version

8.3.13 (also 8.4 and older PHP versions)

Operating System

Tested on OSX, debian and ubuntu.