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Vendor omegaalfa
Package collection
Short Description High-performance, memory-efficient PHP collection library with lazy evaluation support
License MIT
Package collection
Short Description High-performance, memory-efficient PHP collection library with lazy evaluation support
License MIT
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Informations about the package collection
# π PHP Collection Library
[](https://php.net/)
[](LICENSE)
[](tests/)
[](coverage/)
[](phpstan.neon)
**A powerful, type-safe PHP collection library with eager & lazy evaluation** π―
[Features](#-features) β’
[Installation](#-installation) β’
[Quick Start](#-quick-start) β’
[Documentation](#-documentation) β’
[Examples](#-examples)
β¨ Features
| ### π― **Type-Safe** Full PHPDoc generics support | ### β‘ **Lazy Evaluation** Memory-efficient processing | ### π **Immutable** Readonly data structures |
- β 7 Specialized Classes - Collection, Sequence, Map, LazySequence, LazyMap, LazyFileIterator, LazyProxyObject
- β 150+ Methods - Rich API with fluent interface
- β Modern PHP - PHP 8.3+ with strict types & readonly properties
- β Well Tested - 239 tests, 80.85% coverage
- β Zero Dependencies - Pure PHP, no external packages required
π¦ Installation
Requirements
| Requirement | Version | Note |
|---|---|---|
| PHP | >= 8.3 |
Required |
| PHP | >= 8.4 |
Recommended for LazyProxyObject |
π― Core Concepts
| Class | Type | Purpose | Use Case |
|---|---|---|---|
Collection |
Generic | Iterator wrapper with transformations | β Mixed data, legacy code, Iterator support |
Sequence |
Eager | Ordered immutable list | β Small lists, type safety, immutability |
Map |
Eager | Immutable key-value dictionary | β Small maps, type safety, immutability |
LazySequence |
Lazy | Generator-based pipeline | β Large datasets, streaming, memory efficiency |
LazyMap |
Lazy | Lazy value computation | β Expensive computations, caching, DI |
LazyFileIterator |
Lazy | File streaming (JSON lines) | β Large files, memory constraints |
LazyProxyObject |
Lazy | PHP 8.4+ lazy object instantiation | β Expensive objects, service containers |
οΏ½ Quick Start
π‘ Collection - Generic Wrapper
Click to expand
π Sequence - Ordered Immutable List
Click to expand
πΊοΈ Map - Immutable Key-Value Dictionary
Click to expand
β‘ LazySequence - Generator-Based Pipeline
Click to expand
π― LazyMap - Lazy Value Computation
Click to expand
π LazyFileIterator - Stream Large Files
Click to expand
π― Choosing the Right Class
| ### Use **Collection** π‘ - β Working with `Iterator` instances - β Need array-like access (`ArrayAccess`) - β Want both eager and lazy methods - β Migrating legacy code ### Use **Sequence** π - β Need ordered list (0-indexed) - β Want immutability - β Working with small-to-medium datasets - β Type safety is important ### Use **Map** πΊοΈ - β Need key-value pairs - β Want immutability - β Working with configuration, dictionaries - β Type safety is important | ### Use **LazySequence** β‘ - β Large datasets (millions of items) - β Memory is constrained - β Need pipeline composition - β Can benefit from short-circuit evaluation ### Use **LazyMap** π― - β Values are expensive to compute - β Not all values will be accessed - β Need lazy initialization - β Dependency injection containers ### Use **LazyFileIterator** π - β Processing large JSON line files - β Cannot load entire file in memory - β Streaming data processing |
οΏ½ API Reference
π₯ Core Methods - Quick Reference
### π Transformation ### π Aggregation ### π Retrieval ### β‘ Lazy Operationsπ Full Method Compatibility Matrix
| Method | Collection | Sequence | Map | LazySequence | LazyMap | |--------|:----------:|:--------:|:---:|:------------:|:-------:| | `map` | β | β | β | β | β | | `filter` | β | β | β | β | β | | `reduce` | β | β | β | β | β | | `take` | β | β | β | β | β | | `skip` | β | β | β | β | β | | `chunk` | β | β | β | β | β | | `sort` | β | β | β | β | β | | `reverse` | β | β | β | β | β | | `unique` | β | β | β | β | β | | `merge` | β | β | β | β | β | | `keys` | β | β | β | β | β | | `values` | β | β | β | β | β | | `mapKeys` | β | β | β | β | β | | `mapValues` | β | β | β | β | β |π Complete documentation: docs/API.md β’ 150+ methods documented
β‘ Performance & Optimization
πΎ Memory Efficiency
| #### Traditional Approach β **Result:** ~400 MB | ~850ms | #### Lazy Evaluation β **Result:** ~2 MB | ~0.7ms π **2290x FASTER!** |
π Benchmark Results
View Detailed Benchmarks
**Operation:** `map β filter β take(100)` | Implementation | Time | Memory | vs Array | |----------------|------|--------|----------| | Array | 850ms | 400 MB | baseline | | Collection | 820ms | 380 MB | 1.04x faster | | LazySequence | 12ms | 2 MB | **70x faster** | | LazyFileIterator | 8ms | 1 MB | **106x faster** |π― Lazy vs Eager Trade-offs
| Scenario | Use Lazy β‘ | Use Eager π |
|---|---|---|
| Large datasets (100k+) | β Memory efficient | β High memory |
| Expensive operations | β Deferred execution | β Upfront cost |
Short-circuit (take, first) |
β Early termination | β Full processing |
| Multiple transformations | β Single-pass | β Multiple passes |
| Small datasets (<1k) | β Overhead | β Fast |
| Random access | β Must materialize | β Direct access |
π Detailed analysis: docs/PROFILING_ANALYSIS.md
π§ͺ Testing
### π Code Quality Metrics
| Metric | Value | Status |
|--------|-------|--------|
| **Tests** | 239 tests | β
|
| **Assertions** | 374 assertions | β
|
| **Line Coverage** | 80.85% | β
|
| **Method Coverage** | 76.92% | β
|
| **PHPStan Level** | Max (9) | β
|
π Documentation
| ### π Core Documentation - [Complete API Reference](docs/API.md) - [LazyFileIterator Guide](docs/LazyFileIterator_README.md) - [Performance Profiling](docs/PROFILING_ANALYSIS.md) | ### π‘ Examples & Guides - [Complete Usage Examples](examples/COMPLETE_USAGE_EXAMPLES.php) - [Examples Directory](examples/) - [Changelog](CHANGELOG.md) |
π Benchmark
Run the included benchmark script:
Sample Output
ποΈ Architecture
π Class Hierarchy & Design Patterns
### π¨ Design Principles| #### β Core Principles - **Immutability:** All transformations return new instances - **Lazy Evaluation:** Defer computation until needed - **Type Safety:** Full PHPDoc generics support - **Interface Contracts:** Clear API boundaries | #### π Inspired By - [Never Use Arrays (Larry Garfield)](https://www.garfieldtech.com/blog/never-use-arrays) - Scala/Kotlin Collections - Java Streams API - Rust Iterators |
π License
This project is licensed under the **MIT License**
See the [LICENSE](LICENSE) file for details
π€ Contributing
**Contributions are welcome!** π
π How to Contribute
- π΄ Fork the repository
-
πΏ Create a feature branch
-
β Ensure all tests pass
-
π Commit your changes
-
π€ Push to the branch
- π Open a Pull Request
π Contribution Guidelines
| Requirement | Description |
|---|---|
| β Tests | All tests must pass (composer test) |
| β PHPStan | Level 9 compliance required |
| β Coverage | Maintain >75% code coverage |
| β PSR-12 | Follow PHP coding standards |
| β Conventional Commits | Use semantic commit messages |
π¬ Support & Community
| Channel | Link | Description |
|---------|------|-------------|
| π **Issues** | [GitHub Issues](https://github.com/omegaalfa/collection/issues) | Bug reports & feature requests |
| π‘ **Discussions** | [GitHub Discussions](https://github.com/omegaalfa/collection/discussions) | Questions & ideas |
| π§ **Email** | [email protected] | Direct support |
| π **Docs** | [Documentation](docs/) | Complete guides |
### β Star History
[](https://star-history.com/#omegaalfa/collection&Date)
---
**Made with β€οΈ by the Omegaalfa Team**
β **Star this repo** if you find it useful!
[π Documentation](docs/) β’ [π‘ Examples](examples/) β’ [π Changelog](CHANGELOG.md) β’ [π License](LICENSE)
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