A class that does not return an interface instance of PHP

Question

I get a strange error in a class that implements an interface.

Error:

Fatal error allowed: argument 1 passed MyApp \ Library \ Cache :: __ construct () must be an instance of MyApp \ Contacts \ CacheInterface, an instance of MyApp \ Driver \ Cache \ File is given

File class:

namespace MyApp\Driver\Cache; use MyApp\Library\Config; use MyApp\Contracts\CacheInterface; class File implements CacheInterface { private $expire; public function __construct($expire, Config $config) { $this->expire = $expire; $this->config = $config; ... more code } } 

Cache Class:

 namespace MyApp\Library; use MyApp\Contacts\CacheInterface; final class Cache { private $cache; public function __construct(CacheInterface $cache) { $this->cache = $cache; } ... more methods } 

Interface:

 namespace MyApp\Contracts; interface CacheInterface { public function get($key); public function set($key, $value); public function delete($key); public function flush_cache(); } 

Implemented as a service in a Pimple container:

 $this->data['cache'] = function ($data) { switch ($data['config_cache_type_id']): case 'apc': $driver = new Apc($data['cache.time'], $data['config']); break; case 'mem': $driver = new Mem($data['cache.time'], $data['config']); $driver->connect(); break; case 'file': default: $driver = new File($data['cache.time'], $data['config']); break; endswitch; return new Cache($driver); }; 

Of course, 4 driver and cache classes are included in the use key before the container class.

I do not see what I am missing. I performed several other contracts in exactly the same procedure. Any ideas would be appreciated.

Answer 1

In the File.class file, you can try replacing:

 use MyApp\Contracts\CacheInterface; 

WITH

 use MyApp\Contacts\CacheInterface; 

And for your interface use:

 namespace MyApp\Contacts;