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Package di-container
Short Description Lightweight dependency injection container for PHPNomad
License MIT
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Informations about the package di-container
phpnomad/di-container
phpnomad/di-container is the concrete dependency injection container that ships with PHPNomad. It's a single class, PHPNomad\Di\Container\Container, that does reflection-based autowiring and needs no configuration files to work.
The split between interfaces and implementation is deliberate. phpnomad/di defines the contracts (InstanceProvider, HasBindings, DiException). phpnomad/di-container provides the class that implements them. Most applications install both, and installing phpnomad/core pulls them in transitively. PHPNomad has been running in production for years powering Siren and several MCP servers, so this container has been resolving real dependency graphs the whole time.
Installation
Composer will pull in phpnomad/di automatically as a required dependency, so there's nothing else to install for a minimal setup.
Quick Start
Construct the container, bind your abstracts to their concretes, and ask for what you need. Constructor dependencies are resolved recursively by reflection.
If PostRepository's constructor takes a Database parameter, the container hands it the Database instance produced by the factory. Any other typed, non-built-in constructor parameters get resolved the same way, all the way down. A second get(PostRepositoryInterface::class) call returns the same repository instance the first call returned.
Key Concepts
- Reflection-based autowiring. Typed, non-built-in constructor parameters are resolved recursively through
get(). bind($concrete, $abstract, ...$moreAbstracts)associates one concrete with one or more abstracts. All abstracts bound this way share the same resolved instance.bindFactory($abstract, $callable)binds an abstract to a callable. Use it when construction needs a runtime value like an existing database handle, a config array, or an environment variable.get($abstract)is memoized. The first call instantiates, every call after that returns the cached instance. There is no separate singleton API because sharing is the default.- Asking
get()for an interface that hasn't been bound to a concrete throwsDiException. The same exception wraps anyReflectionExceptionraised while resolving a graph.
Documentation
Full documentation lives at phpnomad.com. The bootstrapping guide shows how the container composes with Bootstrapper and initializers in a complete application, which is how most PHPNomad projects actually wire their dependency graph.
License
MIT, see LICENSE.txt for the full text.
