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

‪2026年9月10日(木) 20:40 ‫سپهر محمودی‬‎ <[email protected]>:‬
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> در تاریخ پنجشنبه ۱۰ سپتامبر ۲۰۲۶، ۰۶:۰۶ youkidearitai <[email protected]> نوشت:
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>> ‪2026年9月10日(木) 10:07 ‫سپهر محمودی‬‎ <[email protected]>:‬
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>> > 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
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>> I can not find definite improve performance.
>> (My PC: WSL Ubuntu 24.04, Ryzen 7 7735HS, 32GB RAM)
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>> 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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> Hi Internals,
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> Thank you all for the time and effort invested in this discussion.
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> Regarding the benchmarks provided by Yuya, I must address two critical issues:
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> 1. The provided implementation does not even build in my environment. It is scientifically impossible to derive any performance conclusions from code that fails to compile.
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> 2. Given your own admission of limited familiarity with the Zend Engine internals, the methodology applied here lacks the necessary technical rigor for a valid assessment.
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> I am more than willing to engage with constructive, reproducible, and engine-aware performance analysis. However, as it stands, the provided material is effectively contentless and does not offer a basis for a technical evaluation.
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> Best regards,
>
> Sepehr
>
>

Hi

PLEASE UNZIP ATTACHED FILE. YOUR CODE.

Regards.
Yuya

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