EnvInterface.php
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EnvInterface.php
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	<?php

	/*
	* This file is part of Psy Shell.
	*
	* (c) 2012-2023 Justin Hileman
	*
	* For the full copyright and license information, please view the LICENSE
	* file that was distributed with this source code.
	*/

	namespace Psy;

	/**
	* Abstraction around environment variables.
	*/
	interface EnvInterface
	{
	/**
	* Get an environment variable by name.
	*
	* @return string\|null
	*/
	public function get(string $key);
	}