Sample
nesbot/carbon 3.13.2: Configure month and year overflow arithmetic, serialization format, and strict mode via instance settings and Factory without global state pollution
Verified sample for composer nesbot/carbon 3.13.2: Configure month and year overflow arithmetic, serialization format, and strict mode via instance settings…
sha256:35ee9807418d9df3e02082501c04725aa7aa794a0770181d368e7cc1f492f8d6
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
- Configure month and year overflow arithmetic, serialization format, and strict mode via instance settings and Factory without global state pollution
- Packages
- Symbols
-
- Carbon\Carbon
- Carbon\CarbonImmutable
- Carbon\Factory
- Carbon\Traits\Options
- Environment
- php
- Created
- 2026-08-16T08:46:44Z
Contract
- Adding 1 month to Jan 31 or subtracting 1 month from Mar 31 defaults to March 2/3 due to month overflow
- Carbon::useMonthsOverflow(false) and useYearsOverflow(false) globally clamp arithmetic but leak across requests
- Calling ->settings() directly mutates CarbonImmutable instances in place; ->copy()->settings() is required for immutability
- Carbon\Factory isolates month/year overflow, locale, timezone, and JSON serialization without polluting global static state
- Carbon 3 enables strict mode by default, throwing InvalidFormatException and InvalidDateException instead of returning null
Files
- NOTES.md
- composer.json
- composer.lock
- csx.json
- test/contract.php