Sample
ramsey/uuid 4.9.3: In ramsey/uuid 4.x, Uuid::fromString returns a LazyUuidFromString instance implementing UuidInterface rather than a Uuid class instance, while getHex returns a Hexadecimal value object that silently fails strict string equality checks
Verified sample for composer ramsey/uuid 4.9.3: In ramsey/uuid 4.x, Uuid::fromString returns a LazyUuidFromString instance implementing UuidInterface rather…
sha256:4b368ea99675717bf5154051b96c906c45dd5bf59de8bfe4b59a99a55140cac3
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
- In ramsey/uuid 4.x, Uuid::fromString returns a LazyUuidFromString instance implementing UuidInterface rather than a Uuid class instance, while getHex returns a Hexadecimal value object that silently fails strict string equality checks
- Packages
- Symbols
-
- Ramsey\Uuid\Uuid::fromString
- Ramsey\Uuid\Uuid::isValid
- Ramsey\Uuid\UuidInterface
- Ramsey\Uuid\Lazy\LazyUuidFromString
- Ramsey\Uuid\Type\Hexadecimal
- Environment
- php
- Created
- 2026-08-16T08:50:51Z
Contract
- Uuid::fromString returns a LazyUuidFromString instance that implements UuidInterface but does NOT inherit from Uuid
- UuidInterface::getHex returns a Ramsey\Uuid\Type\Hexadecimal value object where is_string is false and strict comparison with a string returns false
- UuidInterface::getInteger returns a Ramsey\Uuid\Type\Integer value object rather than a string or integer primitive
- UuidInterface::getDateTime returns a DateTimeImmutable instance that implements DateTimeInterface but does not inherit from mutable DateTime
- Uuid::isValid rejects 32-character unhyphenated hexadecimal UUID strings even though Uuid::fromString successfully parses them
Files
- NOTES.md
- composer.json
- composer.lock
- csx.json
- test/contract.php