Unexpected spacing for anonymous classes with constructor arguments

[TimWolla]

Describe the bug

When creating an anonymous class while passing constructor arguments phpcs requests a space between class and the (. I did not expect this and it looks off.

Code sample

<?php

namespace foo;

class Foo
{
    protected function foo()
    {
        new class(1) extends Bar { // line 9
        };
    }
}

Custom ruleset

<?xml version="1.0"?>
<ruleset>
	<file>./test/</file>
	<arg name="extensions" value="php" />
	<arg value="p"/>
	<arg name="basepath" value="."/>

	<rule ref="PSR12"/>
</ruleset>

To reproduce

Steps to reproduce the behavior:

1. Create a file called test.php with the code sample above.
2. Run phpcs test.php
3. See error message displayed

FILE: test/test.php
----------------------------------------------------------------------
FOUND 1 ERROR AFFECTING 1 LINE
----------------------------------------------------------------------
 9 | ERROR | [x] Expected 1 space after class keyword; 0 found
----------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
----------------------------------------------------------------------

Expected behavior

I expected that error not to be reported, because I believe there should not be a space between class and (.

Versions (please complete the following information):

• OS: Docker container (Debian based) on Ubuntu host.
• PHP: 7.4.12
• PHPCS: 3.5.8 (stable)
• Standard: PSR12

Additional context

PHP-CS-Fixer with the PSR2 ruleset expects the space to not be there.

[TimWolla]

Looking at this: php-fig/fig-standards#1206 the consensus of the standard appears to be that the space should not be there, even if the current version of PSR-12 does not say anything regarding this topic.

[gsherwood]

If the errata is accepted then I'd change the PSR-12 standard included with PHPCS. But right now the PSR-12 standard says:

Anonymous Classes MUST follow the same guidelines and principles as closures in the above section.

And in the closures section, all the examples clearly show a space between the function keyword and the opening parenthesis of the argument list. So that's all I have to go on until a change is made to clarify things.

[TimWolla]

For the record: PHP CS Fixer was changed to match PHP CodeSniffer: PHP-CS-Fixer/PHP-CS-Fixer#5924