name : RepositoryInterface.php <?php declare(strict_types=1); namespace Dotenv\Repository; interface RepositoryInterface { /** * Determine if the given environment variable is defined. * * @param string $name * * @return bool */ public function has(string $name); /** * Get an environment variable. * * @param string $name * * @throws \InvalidArgumentException * * @return string|null */ public function get(string $name); /** * Set an environment variable. * * @param string $name * @param string $value * * @throws \InvalidArgumentException * * @return bool */ public function set(string $name, string $value); /** * Clear an environment variable. * * @param string $name * * @throws \InvalidArgumentException * * @return bool */ public function clear(string $name); }