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 <AM8P250MB0170B581DDCF7F0159B6D8D8E29CA@AM8P250MB0170.EURP250.PROD.OUTLOOK.COM>
Date: Sat, 31 Jan 2026 05:21:12 +0100
User-Agent: Mozilla Thunderbird
Subject: Re: [PHP-DEV] [RFC] Partial Function Application for instance of
 non-static methods ("$this")
To: =?UTF-8?Q?Tim_D=C3=BCsterhus?= <tim@bastelstu.be>,
 php internals <internals@lists.php.net>,
 Arnaud Le Blanc <arnaud.lb@gmail.com>
References: <64953ec741a4c6609519e1878ad37b54@bastelstu.be>
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From: bobwei9@hotmail.com (Bob Weinand)

Hey Tim,

On 22.1.2026 10:50:26, Tim Düsterhus wrote:
> Hi
>
> Arnaud and I would like to start discussion on our RFC “Partial 
> Function Application for instance of non-static methods ("$this")” 
> which is intended to round-off the Partial Function Application RFC 
> that was accepted recently:
>
> https://wiki.php.net/rfc/partial_function_application_this
>
> Best regards
> Tim Düsterhus


I've been thinking about this RFC and I think it's a good addition.


I just have one question: Why "$this: $obj" and not "this: $obj"? The 
variable in the function is "$this". Just like "$arg", which gets passed 
as "arg: $value", without the extra leading dollar-sign.

(There's also no conflict, as you may not redeclare $this yourself in a 
non-static method.)

When I see $<varname> before the colon, I sort of expect a dynamic 
parameter name, but it's not.


Thanks,

Bob