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<?php
declare(strict_types=1);
/*
* This file is part of the league/config package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\Config;
use League\Config\Exception\UnknownOptionException;
use League\Config\Exception\ValidationException;
/**
* Interface for reading configuration values
*/
interface ConfigurationInterface
{
/**
* @param string $key Configuration option path/key
*
* @psalm-param non-empty-string $key
*
* @return mixed
*
* @throws ValidationException if the schema failed to validate the given input
* @throws UnknownOptionException if the requested key does not exist or is malformed
*/
public function get(string $key);
/**
* @param string $key Configuration option path/key
*
* @psalm-param non-empty-string $key
*
* @return bool Whether the given option exists
*
* @throws ValidationException if the schema failed to validate the given input
*/
public function exists(string $key): bool;
}