---
currentMenu: in-memory
---
# InMemory
This adapter is useful in test environments where you don't want to depend on external filesystems.
## Example
`InMemory` adapter only takes an array of available files as argument.
```
<?php
use Gaufrette\Adapter\InMemory;
use Gaufrette\Filesystem;
$adapter = new InMemory(array('my/file' => 'its content'));
$filesystem = new Filesystem($adapter);
```