Illuminate\Config

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`Illuminate\Config`

use Config;
Config()['test']['test'];

use Config;

Config::all();
Config::get('app.name');

```php

/**
 * Determine if the given configuration value exists.
 *
 * @param  string  $key
 * @return bool
 */
public function has($key);
/**
 * Get the specified configuration value.
 *
 * @param  array|string  $key
 * @param  mixed   $default
 * @return mixed
 */
public function get($key, $default = null);
/**
 * Get all of the configuration items for the application.
 *
 * @return array
 */
public function all();
/**
 * Set a given configuration value.
 *
 * @param  array|string  $key
 * @param  mixed   $value
 * @return void
 */
public function set($key, $value = null);
/**
 * Prepend a value onto an array configuration value.
 *
 * @param  string  $key
 * @param  mixed  $value
 * @return void
 */
public function prepend($key, $value);
/**
 * Push a value onto an array configuration value.
 *
 * @param  string  $key
 * @param  mixed  $value
 * @return void
 */
public function push($key, $value);
```