get(string $id) : mixed
Finds an entry of the container by its identifier and returns it.
| string | $id | Identifier of the entry to look for. |
No entry was found for this identifier.
Error while retrieving the entry.
Entry.
has(string $id) : boolean
Returns true if the container can return an entry for the given identifier.
Returns false otherwise.
has($id) returning true does not mean that get($id) will not throw an exception.
It does however mean that get($id) will not throw a NotFoundExceptionInterface.
| string | $id | Identifier of the entry to look for. |
<?php
/**
* @license http://www.opensource.org/licenses/mit-license.php MIT (see the LICENSE file)
*/
namespace Psr\Container;
/**
* Describes the interface of a container that exposes methods to read its entries.
*/
interface ContainerInterface
{
/**
* Finds an entry of the container by its identifier and returns it.
*
* @param string $id Identifier of the entry to look for.
*
* @throws NotFoundExceptionInterface No entry was found for **this** identifier.
* @throws ContainerExceptionInterface Error while retrieving the entry.
*
* @return mixed Entry.
*/
public function get($id);
/**
* Returns true if the container can return an entry for the given identifier.
* Returns false otherwise.
*
* `has($id)` returning true does not mean that `get($id)` will not throw an exception.
* It does however mean that `get($id)` will not throw a `NotFoundExceptionInterface`.
*
* @param string $id Identifier of the entry to look for.
*
* @return bool
*/
public function has($id);
}