Re: [PHP-DEV] Discussion on array_str_contains() RFC and performance benchmarking methodology

‪2026年9月10日(木) 10:07 ‫سپهر محمودی‬‎ <[email protected]>:‬
>
>
> Hi everyone,
>
> I hope you're all having a great week.
>
> I’ve been following the discussions and recent feedback regarding the array_str_contains() RFC closely. Performance and speed comparisons have come up as a key point, especially around whether a dedicated internal C implementation provides sufficient value compared to a userland foreach loop.
>
> I'd love to open up a constructive and transparent discussion around the benchmarking methodology we're using here. Some of the initial numbers shared recently don't seem to reflect real-world scenarios or different data profiles (like varying array sizes, early exits vs worst-case lookups, UTF-8 strings, and compiler optimization flags like -O2 / -O3).
>
> Before drawing final conclusions on performance, I think it would be great if we could align on:
> 1. The exact benchmark scripts and test datasets we should use to evaluate this fairly.
> 2. The compilation environment and flags used for generating these metrics.
> 3. Where the potential overhead in the current C implementation is coming from and how we can optimize it together.
>
> My goal has always been to make PHP more expressive and efficient for everyday developers. I welcome any suggestions, insights, or benchmark reproductions from the community so we can evaluate this RFC based on solid, agreed-upon data.
>
> Thanks for your time and feedback!
>
> Best regards,
> Sepehr
>

Hi Internals

For your reference, I have attached the benchmark diff files. (commit
hash is 4982bf45f4786faaa198558dd619f8a4d59e25f0)
- .diff
- .exp
- .log
- .out
- .php
- .phpt
- .sh

I can not find definite improve performance.
(My PC: WSL Ubuntu 24.04, Ryzen 7 7735HS, 32GB RAM)

I don't familiar with Zend Engine's performance, However I think
function's performance improvement is limited.

Regards
Yuya

-- 
---------------------------
Yuya Hamada (tekimen)
- https://tekitoh-memdhoi.info
- https://github.com/youkidearitai
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