Derafu: Container - Flexible Data Containers for PHP

A collection of specialized PHP data containers that provide different levels of structure and validation, from simple bags to schema-validated stores.

Features

• 🎯 Purpose-built containers for different needs.
• 🔍 JSON Schema validation support.
• 📦 Simple to complex data structures.
• 🔄 Sequential data handling.
• 🛡️ Type-safe operations.
• 🧩 Common interface across containers.
• 🪶 Minimal dependencies.
• 🧪 Comprehensive test coverage.

Why Derafu\Container?

Unlike generic data structures, Derafu\Container provides specialized containers each designed for specific use cases:

• Bag: Simple, flexible data storage without restrictions.
• Vault: Basic structured data with validation.
• Store: Advanced data validation using JSON Schema.
• Journal: Sequential data storage with LIFO access.

Installation

Install via Composer:

composer require derafu/container

Basic Usage

Bag - Flexible Container

use Derafu\Container\Bag;

$bag = new Bag();
$bag->set('user.name', 'John');
$bag->set('user.email', '[email protected]');

echo $bag->get('user.name'); // "John"

Vault - Structured Container

use Derafu\Container\Vault;

$vault = new Vault([], [
    'user' => [
        'type' => 'array',
        'required' => true,
        'schema' => [
            'name' => ['type' => 'string'],
            'age' => ['type' => 'integer'],
        ],
    ],
]);

$vault->set('user', [
    'name' => 'John',
    'age' => 30,
]);

Store - JSON Schema Container

use Derafu\Container\Store;

$schema = [
    'type' => 'object',
    'properties' => [
        'user' => [
            'type' => 'object',
            'required' => ['name', 'email'],
            'properties' => [
                'name' => ['type' => 'string'],
                'email' => ['type' => 'string', 'format' => 'email'],
            ],
        ],
    ],
];

$store = new Store([], $schema);
$store->set('user', [
    'name' => 'John',
    'email' => '[email protected]',
]);

Journal - Sequential Container

use Derafu\Container\Journal;

$journal = new Journal();
$journal->add('First Entry');
$journal->add('Second Entry');

print_r($journal->reverse()); // Shows entries newest first.

Container Comparison

Feature	Bag	Vault	Store	Journal
Schema	No	Simple	JSON	No
Validation	No	Basic	Full	No
Nested Data	Yes	Yes	Yes	No
Sequential	No	No	No	Yes
Dot Notation	Yes	Yes	Yes	No

Common Interface

All containers implement ContainerInterface:

interface ContainerInterface extends ArrayAccess
{
    public function set(string $key, mixed $value): static;
    public function get(string $key, mixed $default = null): mixed;
    public function has(string $key): bool;
    public function clear(?string $key = null): void;
}

Advanced Usage

Custom Validation in Vault

use Derafu\Container\Vault;

$vault = new Vault([], [
    'age' => [
        'type' => 'integer',
        'validator' => fn ($value) => $value >= 18
    ]
]);

Complex JSON Schema in Store

use Derafu\Container\Store;

$store = new Store([], [
    'type' => 'object',
    'properties' => [
        'users' => [
            'type' => 'array',
            'items' => [
                'type' => 'object',
                'required' => ['id', 'name'],
                'properties' => [
                    'id' => ['type' => 'integer'],
                    'name' => ['type' => 'string'],
                    'email' => ['type' => 'string', 'format' => 'email'],
                ],
            ],
        ],
    ],
]);

Journal with Filtering

use Derafu\Container\Journal;

$journal = new Journal();
$journal->add(['level' => 'info', 'message' => 'System started']);
$journal->add(['level' => 'error', 'message' => 'Connection failed']);

$errors = array_filter($journal->reverse(), fn($entry) =>
    $entry['level'] === 'error'
);

Contributing

Contributions are welcome! Please feel free to submit a Pull Request. For major changes, please open an issue first to discuss what you would like to change.

License

This package is open-sourced software licensed under the MIT license.