🔗 Project on GitHub

View the full source code and contribute on GitHub:

https://github.com/BcommeBois/oihana-php-schema

✨ Key Features

• ✔️ Full modeling of Schema.org entities
• 🧩 Automatic JSON-LD serialization (JsonSerializable)
• 🪄 Recursive object hydration (including nested types and union types)
• 🧠 Internal reflection system (oihana\reflections)
• 🎯 Safe property access via constants (e.g. Prop::NAME)
• 📚 Extensible architecture for custom ontologies
• 🔐 Support for ArangoDB metadata (_id, _key, _rev, _from, _to)

📦 Installation

This library requires PHP 8.4+ and is installed via Composer:

composer require oihana/php-schema

🚀 Quick Example

Here is a basic usage example using Person and PostalAddress:

use org\schema\Person;
use org\schema\PostalAddress;
use org\schema\constants\Prop;

$person = new Person
([
    Prop::ID      => '2555' ,
    Prop::NAME    => 'John Doe' ,
    Prop::ADDRESS => new PostalAddress
    ([
        Prop::STREET_ADDRESS => '2 chemin des Vergers' ,
        Prop::POSTAL_CODE    => '49170'
    ])
]);

echo json_encode($person, JSON_PRETTY_PRINT);

JSON-LD output:

{
  "@type": "Person",
  "@context": "https://schema.org",
  "id": "2555",
  "name": "John Doe",
  "address":
  {
    "@type": "PostalAddress",
    "@context": "https://schema.org",
    "streetAddress": "2 chemin des Vergers",
    "postalCode": "49170"
  }
}

🧠 Internal Architecture

All schema entities inherit from a base class Thing, which handles metadata, public properties, and JSON-LD serialization logic:

• Constructor: Hydrates the object via array or stdClass
• JSON Serialization: Reflects public properties and adds @type and @context
• Reflection helpers: Provided via internal ReflectionTrait

🔐 Property Constants

The Prop class enumerates all known schema properties as constants for safe access:

use org\schema\constants\Prop;

$event = new Event
([
    Prop::NAME     => 'Oihana Conf 2025',
    Prop::LOCATION => new Place( [ Prop::NAME => 'Nantes' ] )
]);

✅ Running Unit Tests

Run all unit tests:

composer test

Run a specific test:

composer test ./tests/org/schema/ThingTest.php

📄 License

This project is licensed under the Mozilla Public License 2.0 (MPL-2.0).

👤 About the Author

• Name: Marc ALCARAZ (aka eKameleon)
• Website: www.ooop.fr
• Email: marc@ooop.fr

📚 Documentation

Full project documentation is available at: https://bcommebois.github.io/oihana-php-schema
Explore namespaces: org\schema\, org\schema\traits, org\schema\constants for types, behaviors and property constants. A complete developer guide is coming soon (UML, object maps, property references).

🧩 Advanced Usage

Union-typed properties

Some properties accept multiple types. For instance, publisher may be a string, a Person, or an Organization.

use org\schema\CreativeWork;
use org\schema\Person;
use org\schema\Organization;
use org\schema\constants\Prop;

$post = new CreativeWork([
    Prop::NAME      => 'Release Notes',
    Prop::PUBLISHER => new Organization([ Prop::NAME => 'Oihana' ])
]);

Arrays and nested entities

Compose objects with arrays of other entities via typed public properties.

use org\schema\Thing;
use org\schema\constants\Prop;

$parent = new Thing([
    Prop::NAME    => 'Bundle',
    Prop::HAS_PART => [
        new Thing([ Prop::NAME => 'Part A' ]),
        new Thing([ Prop::NAME => 'Part B' ]),
    ],
]);

JSON-LD metadata for ArangoDB

Base Thing supports ArangoDB-style metadata fields to facilitate graph storage: _key, _id, _rev, _from, _to.

use org\schema\Thing;

$edge = new Thing([
    '_from' => 'users/2555',
    '_to'   => 'groups/42',
]);

Deep/recursive hydration

The constructor copies provided values into public properties. For deep graphs and automatic casting, you can rely on the internal reflection utilities exposed by oihana/php-reflect. Typical usage is to call a reflection-based hydrate() to materialize nested arrays into value objects.

🧱 Extending the Library

Extend org\schema\Thing (or a more specific class) and declare typed public properties. You can also add constants alongside org\schema\constants\Prop.

namespace app\domain;

use org\schema\Thing;

class CustomAsset extends Thing
{
    public ?string $slug;
    public ?string $category;
}

⚙️ Installation Notes

• Requires PHP 8.4+.
• Depends on oihana/php-core and oihana/php-reflect. If your project enforces stable-only, consider setting "minimum-stability": "dev" and "prefer-stable": true while these libraries are pre-release.

🤝 Contributing

Contributions are welcome:

• Open an issue to discuss significant changes before a PR.
• Add tests for bug fixes and new features.
• Keep code style consistent and types explicit.

composer install
composer test
composer doc

🔒 Security

If you discover a security vulnerability, email marc@ooop.fr. Do not open a public issue.

📜 Changelog

See CHANGELOG.md for notable changes.

🔗 Related Packages

• oihana/php-core – core helpers and utilities used by this library
• oihana/php-reflect – reflection and hydration utilities

🛠️ Generate the Documentation

We use phpDocumentor to generate this site.

composer doc

❓ FAQ

• Why JSON-LD? It’s schema-friendly, web-native, and search-engine friendly.
• Can I output plain arrays? Yes, jsonSerialize() returns arrays you can pass to any encoder.
• How to ignore nulls? Serialization automatically removes null values.

Table of Contents

Namespaces

fr

org