Re: [PHP-DEV] [RFC] Pipe Assignment Operator

Hi

On 2026-07-20 16:55, Bob Weinand wrote:
> I just have one more question to the RFC author, which I see in the 
> implementation, but the RFC is not explicitly noting:
> Is it intentional that fetching is repeated?

I would consider that a bug in the implementation, given that the 
“Single-Evaluation Guarantee” section mentions:

> When the LHS contains sub-expressions, they are evaluated exactly once:

and

> This is the same guarantee that ??= provides over $x = $x ?? default, 
> implemented using the same compile-time memoization mechanism.

Thus if it behaves differently to `??=`, it's a bug in the 
implementation :-)

Best regards
Tim Düsterhus