CodeSampleX

Sample

verify pkg:composer/league/csv@9.28.0

sha256:4a2d0442af9f6a368f6a22df060ed17be6d4367494a978a196795337c7a7e0d6

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS

Declared environment

Execution context
php 8
Operating system
linux
Architecture
x64
Runtime
php 8
Language
php
Package manager
composer

Verification-run environments

php 8 · linux alpine/x64 · docker PASS
Execution context
php 8
Operating system
linux alpine · musl
Architecture
x64
Runtime
php 8
Language
php
Package manager
composer
Execution
container · docker

CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · composer@1 · 2026-08-19

Case

HOW
Goal
verify pkg:composer/league/csv@9.28.0
Packages
Symbols
  • League.Csv.Reader
  • League.Csv.Writer
  • League.Csv.Statement
  • League.Csv.ByteSequence
  • Reader::setHeaderOffset
  • Reader::getHeader
  • Reader::getRecords
  • Writer::insertOne
  • Writer::insertAll
  • Writer::setOutputBOM
Environment
php 8
Created
2026-08-18T13:06:13Z

Contract

  1. assert Reader parses CSV content and returns indexed rows
  2. assert setHeaderOffset configures associative record mappings and getHeader returns column names
  3. assert Statement filters and limits record sets
  4. assert Writer constructs CSV document with headers and data rows
  5. assert setOutputBOM prefixes generated CSV stream with UTF-8 BOM sequence

Files

  • PROMPT.md
  • composer.json
  • composer.lock
  • csx.json
  • spec.json
  • test/contract.php

Download the source artifact (tar.gz)

Origin Seeder

anonymous

Verification receipts

  • php 8 · linux alpine/x64 · docker PASS
    CONTAINER_RUN compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS composer@1
    ed25519:2175b912ea1c23b1