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1<?php
2
3declare(strict_types=1);
4
5/**
6 * Fast Forward Development Tools for PHP projects.
7 *
8 * This file is part of fast-forward/dev-tools project.
9 *
10 * @author   Felipe SayĆ£o Lobato Abreu <github@mentordosnerds.com>
11 * @license  https://opensource.org/licenses/MIT MIT License
12 *
13 * @see      https://github.com/php-fast-forward/
14 * @see      https://github.com/php-fast-forward/dev-tools
15 * @see      https://github.com/php-fast-forward/dev-tools/issues
16 * @see      https://php-fast-forward.github.io/dev-tools/
17 * @see      https://datatracker.ietf.org/doc/html/rfc2119
18 */
19
20namespace FastForward\DevTools\Environment;
21
22/**
23 * Reads environment variables through PHP's native runtime.
24 */
25 class Environment implements EnvironmentInterface
26{
27    /**
28     * Reads an environment variable.
29     *
30     * @param string $name the environment variable name
31     * @param string|null $default the value returned when the variable is not defined
32     *
33     * @return string|null the variable value, or the default when it is not defined
34     */
35    public function get(string $name, ?string $default = null): ?string
36    {
37        $value = getenv($name);
38
39        if (false === $value) {
40            return $default;
41        }
42
43        return $value;
44    }
45}