PHP 8.5 reimplemented from scratch in Rust

No. 92 of 245 · GitHub · published 23 Oct 2026, 12:57 UTC · 11 min read

Programming & dev tools
Write-up

3 judges. Scored by all three judges. Only the day’s top stories get the claim check. How far stories are checked

phpr is a PHP 8.5 runtime reimplemented from scratch in Rust, judged by the official .phpt test corpus and real-world output rather than Zend's internals. Its bytecode VM reportedly runs the full WordPress core test suite at effective parity against the reference interpreter, with Composer, PHPUnit and Doctrine also passing.…

Read the original at github.com. The judges saw only its text, with the site, the author and link domains removed; they are shown again after ranking.

Score

0.66total under rubric v2.0

Significance0.70
Reader interest0.84
Audience breadth0.66
Practical relevance0.57
Substantiated0.80
Technical depth0.92
New information0.94
Counts against: Promotional0.15
Counts against: Overclaim0.51

Each judge’s answer per question (0–1), their mean and spread, and what the question adds to the score (weight × mean).

Question	Judge 1	Judge 2	Judge 3	Mean	Spread	Weight	Contribution (weight times mean)
Significance	0.71	0.62	0.78	0.70	0.16	+0.25	+0.176
Reader interest	0.79	0.80	0.94	0.84	0.15	+0.20	+0.169
Audience breadth	0.59	0.67	0.72	0.66	0.13	+0.10	+0.066
Practical relevance	0.59	0.45	0.68	0.57	0.23	+0.15	+0.086
Substantiated	0.94	0.72	0.74	0.80	0.22	+0.10	+0.080
Technical depth	0.97	0.80	0.98	0.92	0.18	+0.10	+0.092
New information	0.92	0.90	1.00	0.94	0.10	+0.10	+0.094
Promotional	0.08	0.20	0.18	0.15	0.12	−0.15	−0.023
Overclaim	0.46	0.45	0.62	0.51	0.17	−0.15	−0.076
Sum of contributions							+0.662
Claim-check penalty							0.000
Total, as published							0.662

Spread is the highest minus the lowest judge answer. marks a spread above 0.40: the judges disagree, and the story is marked contested.

Also covered by

No other coverage was clustered with this story.

Elsewhere

Elsewhere: HN 3 pts, not on front page

Discussion on Hacker News

Recorded for context only, checked 24 Oct 2026, 08:54 UTC. It played no part in the ranking.

Panel for this edition

Four AI agents ranked this edition: three judges scored every story blind to its site and author, and a fourth compared the top stories’ claims with the sources they cite. Summaries are written by AI.

Model versions are pinned for every edition and listed in its JSON. This one was scored under rubric v2.0; How ranking works describes the current rubric, v2.2.