<?php namespace Dotenv\Environment\Adapter; use PhpOption\Option; class PutenvAdapter implements AdapterInterface { /** * Determines if the adapter is supported. * * @return bool */ public function isSupported() { return function_exists('putenv'); } /** * Get an environment variable, if it exists. * * @param string $name * * @return \PhpOption\Option */ public function get($name) { return Option::fromValue(getenv($name), false); } /** * Set an environment variable. * * @param string $name * @param string|null $value * * @return void */ public function set($name, $value = null) { putenv("$name=$value"); } /** * Clear an environment variable. * * @param string $name * * @return void */ public function clear($name) { putenv($name); } }