> For the complete documentation index, see [llms.txt](https://docs.sonsofphp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sonsofphp.com/components/container.md). # Container PSR-11 Container ### Installation ```shell composer require sonsofphp/container ``` ### Usage ```php set('service.id.one', function (ContainerInterface $container) { return new Service(); }); $container->set('service.id.two', function (ContainerInterface $container) { return new Service($container->get('service.id.one')); }); // Services will not be created until they are called, once called, they will // always return the same instance of the service. That means that in the // following code, the "service.id.two" is only constructed once. $service = $container->get('service.id.two'); $service2 = $container->get('service.id.two'); ```