Borrowing it
Nothing to install: this file belongs to lisachenko/native-php-matrix. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/lisachenko/native-php-matrix/master/CLAUDE.mdgit clone --depth 1 https://github.com/lisachenko/native-php-matrixWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/lisachenko/native-php-matrix/claude-md)<a href="https://agentmods.dev/instructions/lisachenko/native-php-matrix/claude-md"><img src="https://agentmods.dev/badge/instructions/lisachenko/native-php-matrix/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/lisachenko/native-php-matrix/claude-md"><img src="https://agentmods.dev/badge/instructions/lisachenko/native-php-matrix/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.05033 | $0.05033 |
| Opus 5.5 | $0.02013 | $0.02013 |
| Sonnet 5.5 | $0.01007 | $0.01007 |
| Haiku 4.5 | $0.00503 | $0.00503 |
Grade B, and why
native-php-matrix CLAUDE.md scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo apt-get install -y libopenblas0 libclblast1 ocl-icd-libopencl1 pocl-opencl-icd How it starts
The opening of the file, as written. The whole thing — 361 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Working on native-php-matrix
This library gives PHP a Matrix class with real operator overloading — +, -,
*, /, ** and == are dispatched by the Zend Engine itself, not emulated in
userland. It does that by using z-engine
to install create_object, do_operation and compare handlers directly onto the
Matrix class entry through PHP FFI. The matrix arithmetic underneath is ordinary,
readable PHP; the only unusual part is how the engine is convinced to call it.
The one rule that is non-negotiable: PHP minor and z-engine line move together
composer.json requires php: ^8.4, and PHP 8.4, 8.5 and 8.6 are supported in
parallel — each minor riding its own z-engine line. z-engine reads engine
structures (zend_class_entry, zval, zend_object_handlers) by byte offset, and
those offsets change on every PHP minor release. Running against the wrong minor
does not throw a nice exception; it reads and writes the wrong memory.
That is why z-engine is required as ~8.4.2 || ~8.5.0 || 8.6.x-dev: Composer
resolves the line matching the running PHP (8.4.x on PHP 8.4, 8.5.x on PHP 8.5,
z-engine master — branch-aliased 8.6.x-dev — on PHP 8.6). Each line declares its
own ~8.4.0/~8.5.0/~8.6.0 platform requirement, so only one line can ever satisfy
a given runtime. 8.4 and 8.5 are stable tags; 8.6 rides the development line until
z-engine tags it. ZEngine\Core::init() (called from bootstrap.php) enforces the
exact match and aborts with a clear message. Never "fix" an initialization failure
by loosening the constraints past the minors z-engine has definitions for, skipping
Core::init(), or defeating the guard. If the environment's PHP does not satisfy
^8.4 (8.4, 8.5 or 8.6), the environment is wrong — say so and stop.
Running tests
composer test
The suite is PHPUnit 12 driving .phpt files in tests/Functional/. Two INI
settings must hold in both the parent PHPUnit process and every .phpt child
process it spawns:
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago Changed · +150 lines · +2,595 tokens per session scan A → B 7d640fbec4d8
- 2mo ago First seen · 211 lines · 2,438 tokens per session scan A 8b5135b31ae6
native-php-matrix CLAUDE.md is an instructions file published in the GitHub repository lisachenko/native-php-matrix (43 stars, last pushed 10d ago), licensed MIT. It adds 5,033 tokens to every session, about $0.0201 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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