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---
layout: documentation
current_menu: zf2
---
# PHP-DI in Zend Framework 2
If you are using Zend Framework 2, PHP-DI provides an easy and clean integration with the existing framework's container.
## Set up
First, install the bridge:
```
composer require php-di/zf2-bridge
```
Register it in `application_root/config/application.config.php`:
```php
// ...
'modules' => [
...
'DI\ZendFramework2',
...
],
'service_manager' => [
// ...
'factories' => [
'DI\Container' => 'DI\ZendFramework2\Service\DIContainerFactory',
],
],
```
That's it!
## Usage
Now you can inject dependencies in your controllers.
Here is an example of the GuestbookController of the quickstart (using attributes):
```php
class GuestbookController extends AbstractActionController
{
/**
* This dependency will be injected by PHP-DI
*/
#[Inject]
private \Application\Service\GuestbookService $guestbookService;
public function indexAction()
{
$this->view->entries = $this->guestbookService->getAllEntries();
}
}
```
If you'd like to define injections using a configuration file, put them in `application_root/config/php-di.config.php`:
```
<?php
return [
'Application\Service\GreetingServiceInterface' => DI\create('Application\Service\GreetingService'),
];
```
Head over to [the definitions documentation](../php-definitions.html) if needed.
## Configuration
To configure PHP-DI itself, you have to override the module config in `config/autoload/global.php` or `config/autoload/local.php`:
```php
return [
'phpdi-zf2' => [
...
]
];
```
### Override definitions file location
```php
return [
'phpdi-zf2' => [
'definitionsFile' => __DIR__ . '/../my-custom-config-file.php',
]
];
```
### Enable file cache
```php
return [
'phpdi-zf2' => [
'cache' => [
'adapter' => 'filesystem',
'namespace' => 'your_di_cache_key',
'directory' => 'your_cache_directory', // default value is data/php-di/cache
],
]
];
```
### Enable redis cache
```php
return [
'phpdi-zf2' => [
'cache' => [
'namespace' => 'your_di_cache_key',
'adapter' => 'redis',
'host' => 'localhost', // default is localhost
'port' => 6379, // default is 6379
],
]
];
```
## More
Read more on the [ZF2-Bridge project on GitHub](https://github.com/PHP-DI/ZF2-Bridge).
|
