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Informations about the package uuid4
UUID4 | Fast RFC 4122 UUIDv4 Generator
Ultra-fast, lightweight PHP library for generating and validating RFC 4122 compliant UUIDv4 identifiers. Perfect for distributed systems, database primary keys, and scenarios requiring cryptographically secure universally unique identifiers without external dependencies.
Install
Why UUID4?
- ✨ Blazing Fast Performance - Optimized implementation with minimal overhead
- 🔧 Universal Compatibility - Works seamlessly from PHP 5.6 to PHP 8.4+
- 🔒 Cryptographically Secure - Uses secure random number generation (random_bytes)
- 📜 RFC 4122 Compliant - Strictly follows official UUID version 4 specification
- 📦 Lightweight - Pure PHP implementation with minimal dependencies
- ✅ Built-in Validation - Comprehensive UUID format and variant validation
- 🚀 Production Ready - Battle-tested with comprehensive test coverage
- 🧪 Fully Tested - 100% code coverage with PHPUnit/Pest test suite
Features
- RFC 4122 Compliant Generation: Creates properly formatted UUIDv4 with correct version (4) and variant bits (8, 9, a, b)
- Cryptographic Security: Leverages PHP's
random_bytes()for cryptographically secure randomness - Strict Validation: Validates UUID format, version, variant, and character set
- Case-Insensitive: Accepts both uppercase and lowercase UUID strings
- Type Safety: Throws exceptions for invalid input types with clear error messages
- Legacy Support: Compatible with ancient PHP versions (5.6+) through modern PHP 8.4
- Zero Configuration: Works out of the box, no setup required
- Memory Efficient: Minimal memory footprint, perfect for high-load applications
Perfect for
- Database Primary Keys: Alternative to auto-increment IDs in distributed databases
- Distributed Systems: Unique ID generation across multiple servers without coordination
- API Development: Request IDs, transaction tracking, resource identifiers
- Microservices: Service-independent unique identifiers
- Event Sourcing: Event IDs, aggregate identifiers
- File Systems: Unique file names, temporary file generation
- Session Management: Session tokens, correlation IDs
- Legacy Systems: Drop-in UUID solution for old PHP applications
Requirements
- PHP: 5.6 or higher (tested up to PHP 8.4)
- Extensions: None (uses only core PHP functions)
- Dependencies:
antikirra/random-bytesfor PHP < 7.0 (providesrandom_bytes()polyfill)- Zero dependencies for PHP 7.0+
Basic usage
Testing
This library is thoroughly tested with comprehensive test coverage:
- UUID Generation: Validates format, version bits, variant bits, and randomness
- UUID Validation: Tests valid/invalid formats, version detection, variant validation
- Edge Cases: Handles uppercase/lowercase, malformed UUIDs, type errors
- PHP Compatibility: Tested across PHP 5.6 through PHP 8.4
Performance
Blazing fast performance benchmarks on Apple M4 with PHP 8.4:
| Operation | Speed | Details |
|---|---|---|
| UUID Generation | 1,626,197 ops/sec | 100,000 iterations in 0.0615 seconds |
| UUID Validation | 8,338,825 ops/sec | 1,000,000 iterations in 0.1199 seconds |
Run php benchmark.php to test performance on your own system.
Keywords
uuid4, uuid-generator, rfc4122, unique-identifier, php-uuid, cryptographically-secure, distributed-systems, php-5.6-compatible, zero-dependencies, lightweight-library, database-primary-keys, microservices
All versions of uuid4 with dependencies
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