Sample
league/csv 9.28.0: Querying tabular CSV with Statement filtering, sparse column projection, and JsonConverter NDJSON serialization across league/csv minor boundaries
Verified sample for composer league/csv 9.28.0: Querying tabular CSV with Statement filtering, sparse column projection, and JsonConverter NDJSON…
sha256:bdab4f6de01db5d03752a79716bf0d4b5686a0d07af52246e3f13b5a2a82a87c
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
php linux x64 php php composer
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| php 8 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · composer@1 |
2026-08-16 |
| php 8 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · composer@1 |
2026-08-18 |
Case
HOW- Goal
- Querying tabular CSV with Statement filtering, sparse column projection, and JsonConverter NDJSON serialization across league/csv minor boundaries
- Packages
- Symbols
-
- League\Csv\Statement
- League\Csv\JsonConverter
- League\Csv\JsonFormat
- League\Csv\Reader
- League\Csv\TabularData
- Environment
- php
- Created
- 2026-08-16T09:19:32Z
Contract
- Statement where() predicates execute before offset() and limit(), slicing the filtered subset rather than document lines
- Statement ResultSet maintains document line offsets as sparse array keys, leaving key 0 absent
- Statement selectAllExcept() and select() on raw headerless CSV retain sparse integer column keys without reindexing
- JsonConverter with JsonFormat::NdJsonHeader requires explicit header argument or throws InvalidArgument
- JsonConverter NdJsonHeader serializes line 1 as a JSON array of column headers and subsequent lines as JSON arrays of values, rather than newline-delimited JSON objects
- TabularData first() and last() return empty arrays on empty CSVs, while firstAsObject() and lastAsObject() return null
- Reader::from() treats string inputs as file paths throwing UnavailableStream on raw CSV content, while createFromString() triggers E_USER_DEPRECATED since 9.27.0
Files
- NOTES.md
- composer.json
- composer.lock
- csx.json
- test/contract.php