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Example code of horde/sessionhandler

Informations about the package sessionhandler

Horde\SessionHandler

Session management with typed objects, capability-detected backends, and no framework opinions.

This library is right for people who like Symfony's rigor, Aura's cleanliness, all my own bugs and PSR-style composability but don't want a framework in their session layer.

Install

Quick start

Or register it as PHP's native handler and keep using $_SESSION:

Architecture

The library is built around three ideas:

Typed value objects. Session IDs are SessionId, not strings that might be empty. Payloads are SerializedSessionPayload, not strings that might be JSON or might be PHP-serialized. Metadata is SessionMetadata with DateTimeImmutable fields, not integer timestamps cast from database columns.

Capability interfaces. A backend declares what it can do through the interfaces it implements. The core asks the type system, not a method that returns true:

Interface What it means
SessionStorageBackend load / save / delete (required)
IterableSessionBackend can list active sessions
SessionMetadataBackend can report created/modified/expires times
AdministrativeSessionBackend can force-expire a session
LockingSessionBackend can acquire/release per-session locks

The orchestrator (SessionHandler) checks instanceof before calling capability methods and throws CapabilityException when the backend does not support the requested operation.

PSR composability. The handler takes an optional PSR-14 EventDispatcherInterface for lifecycle events and a PSR-20 ClockInterface for deterministic time in tests.

Backends

Class Capabilities Requires
FileBackend all five writable directory
SqlBackend storage, iteration, metadata, admin horde/db
HashtableBackend storage, iteration*, admin horde/hashtable
StackBackend storage only two or more backends
ExternalBackend storage only three closures
BuiltinBackend storage only PHP's default handler

*HashtableBackend iteration requires track: true at construction.

Constructors

The Session object

Session is an interface. The default implementation (DefaultSession) is an in-memory key-value store with dirty tracking:

SessionHandler::save() is a no-op when isDirty() returns false.

Events

When an EventDispatcherInterface is provided, the handler dispatches:

Two informational event classes (BackendError, LockFailed) exist for application-level error monitoring.

Extending

Custom backends implement SessionStorageBackend and optionally the capability interfaces they support. Custom serializers implement SessionSerializer. Custom session objects implement Session and come with a matching SessionFactory.

The Horde application framework provides HordeSession (in horde/core, namespace Horde\Core\Session) which extends DefaultSession with scoped key access, authentication metadata via SessionMetaInterface, and transparent per-key encryption via EncryptedValuesInterface. HordeSession stores data in the same two-level $data[$app][$name] structure as PHP's native $_SESSION, so sessions written by the legacy handler are readable without conversion.

A NativePhpSessionSerializer bridges sessions stored through $_SESSION with the object API.

See doc/EXTENDING.md for the full guide.

Upgrading from the legacy Horde_SessionHandler

The lib/ tree ships alongside src/ for backward compatibility. Both autoload paths are active in composer.json. Existing code using Horde_SessionHandler and Horde_SessionHandler_Storage_* continues to work without changes.

New code should use the Horde\SessionHandler namespace. The storage format is wire-compatible for file and SQL backends, but the serialization path differs between the native $_SESSION interface and the explicit object API -- do not mix both for the same session.

See doc/UPGRADING.md for the detailed migration guide.

License

LGPL-2.1-only. See LICENSE.

All versions of sessionhandler with dependencies

PHP Build Version
Package Version
Requires horde/horde-installer-plugin Version dev-FRAMEWORK_6_0 || ^3 || ^2
php Version ^8
horde/exception Version ^3 || dev-FRAMEWORK_6_0
horde/support Version ^3 || dev-FRAMEWORK_6_0
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