thephpleague/oauth2-client
Oauth2 Client
This library is a PHP toolkit for managing OAuth 2.0 authentication flows and connecting applications to external service providers. It provides a standardized framework for handling token exchanges, managing authorization grants, and retrieving user profile information from diverse identity platforms.
The project is distinguished by its inheritance-based provider pattern, which allows developers to build custom integration clients by extending base logic to support unique service workflows and non-standard API specifications. It employs interface-driven contracts to ensure consistent behavior across different providers and utilizes strategy-based token management to handle various grant types and refresh flows within a unified interface.
The library covers a broad range of authentication capabilities, including authorization code, client credentials, and resource owner password flows. It also features automated user identity mapping, which normalizes heterogeneous API responses into consistent data structures, and supports persistent session management through automated token refreshing.
Network communication is handled via a dependency-injected HTTP client, which enables configurable proxy settings for debugging and secure request routing. The library is distributed as a package for integration into PHP applications.
Features
- OAuth Providers - Provides standardized implementations for connecting web applications to external OAuth service providers.
- Driver-Based Provider Architectures - Uses an inheritance-based provider pattern to encapsulate service-specific endpoints and authentication logic into reusable, modular objects.
- Authorization Code Flow Handlers - Manages the authorization code grant flow, handling user redirection and the secure exchange of authorization codes for access tokens.
- OAuth 2.0 Client Implementations - Connects web applications to external service providers to handle secure user authentication and token management workflows.
- Custom API Client Development - Enables developers to build custom integration clients by extending base logic to handle unique provider requirements.
- Cross-Application Authorizations - Enables requesting access tokens using application credentials to perform automated actions without user interaction.
- Client Credentials - Supports the client credentials grant flow for machine-to-machine communication using application credentials.
- OAuth Provider Integrations - Allows building specialized authentication classes to support unique service workflows and non-standard identity platforms.
- Resource Owner Password Credentials Grant Handlers - Supports the resource owner password credentials flow for direct exchange of credentials in high-trust environments.
- Custom Provider Definitions - Enables the definition of custom integration logic by specifying endpoints, parameters, and data mapping requirements for specific service providers.
- Grant-Based Token Lifecycles - Uses interchangeable strategies to handle different grant types and token refresh flows within a unified interface.
- Resource Owner Identification - Extracts and normalizes user profile data from access token responses to provide consistent identity information.
- Session Persistence Management - Maintains secure access to protected resources by automatically refreshing expired tokens to keep user sessions active.
- Session Token Refreshers - Supports refreshing expired access tokens by exchanging stored refresh tokens for new ones to maintain persistent user sessions.
- User Identity Management - Extracts and normalizes user profile data from various identity providers to ensure consistent user information.
- Runtime Contract Enforcement - Defines strict method signatures for authorization and resource retrieval to ensure consistent behavior across diverse service integrations.
- Data Transfer Object Mapping - Maps heterogeneous API responses from various external services into a consistent internal structure for predictable application usage.
- PHP Development Toolkits - Provides a collection of tools for implementing secure user authentication and access control using standardized protocols.
- Authentication and Authorization - Client library for OAuth 2.0 authentication.
