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Date: Sun, 22 Feb 2026 19:06:13 +0100
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Subject: Re: [PHP-DEV] [RFC] Add is_assoc_array() function
To: Muhammed Arshid KV <arshidkv12@gmail.com>, internals@lists.php.net
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From: tim@bastelstu.be (=?UTF-8?Q?Tim_D=C3=BCsterhus?=)

Hi

On 2/21/26 03:35, Muhammed Arshid KV wrote:
> I’ve proposed a small RFC to add *is_assoc_array(array $array):* bool to
> the PHP core.
> 
> RFC: https://wiki.php.net/rfc/is_assoc_array

Besides what the others have already mentioned: Please make sure to fill 
in the RFC template carefully. Quite a number of sections still contain 
placeholder values with instructions as to how the section is supposed 
to be filled in. The “Voting Choices” section is a particular obvious 
example here.

With regard to the “RFC Impact” section, the RFC mentions:

 > Such functions can be replaced with the built-in implementation.

This is not necessarily true. The existing userland function might 
behave differently to the proposed function.

Even though adding new functions is not considered a BC break as per our 
policy, there is an expectation to do some research as to what the 
impact of adding the function would be. Please include this research, 
the RFC template provides some advice on how to do that.

Please also make sure to include a link to the ML discussion in the 
References section for future reference. The correct link is this one: 
https://news-web.php.net/php.internals/130115

Best regards
Tim Düsterhus