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<?php |
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/** |
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* Platine Framework |
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* |
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* Platine Framework is a lightweight, high-performance, simple and elegant |
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* PHP Web framework |
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* |
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* This content is released under the MIT License (MIT) |
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* |
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* Copyright (c) 2020 Platine Framework |
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* Copyright (c) 2017 Jitendra Adhikari |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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/** |
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* @file Env.php |
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* |
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* The Environment management class |
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* |
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* @package Platine\Framework\Env |
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* @author Platine Developers team |
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* @copyright Copyright (c) 2020 |
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* @license http://opensource.org/licenses/MIT MIT License |
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* @link https://www.platine-php.com |
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* @version 1.0.0 |
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* @filesource |
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*/ |
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declare(strict_types=1); |
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namespace Platine\Framework\Env; |
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/** |
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* @class Env |
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* @package Platine\Framework\Env |
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*/ |
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class Env |
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{ |
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/** |
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* Get the environment variable by its key/name. |
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* @param string $key |
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* @param mixed $default |
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* @param string|null $filter |
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* @param int|array<string, mixed> $options Additional options to filter. |
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* @return mixed |
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*/ |
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public static function get( |
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string $key, |
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mixed $default = null, |
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?string $filter = null, |
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int|array $options = 0 |
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): mixed { |
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if ($filter !== null) { |
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$filterMaps = [ |
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'bool' => FILTER_VALIDATE_BOOLEAN, |
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'int' => FILTER_VALIDATE_INT, |
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'float' => FILTER_VALIDATE_FLOAT, |
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'email' => FILTER_VALIDATE_EMAIL, |
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'ip' => FILTER_VALIDATE_IP, |
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'url' => FILTER_VALIDATE_URL, |
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]; |
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if (isset($filterMaps[$filter])) { |
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$filter = $filterMaps[$filter]; |
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} else { |
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$filter = null; |
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} |
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} |
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$value = getenv($key); |
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if ($value !== false) { |
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return static::prepareValue($value, $filter, $options); |
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} |
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if (isset($_ENV[$key])) { |
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return static::prepareValue($_ENV[$key], $filter, $options); |
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} |
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if (isset($_SERVER[$key])) { |
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return static::prepareValue($_SERVER[$key], $filter, $options); |
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} |
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// Default is not passed through filter! |
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return $default; |
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} |
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/** |
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* Prepare the environment value |
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* @param string $value |
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* @param int|null $filter See http://php.net/filter_var |
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* @param array<string, mixed>|int $options |
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* @return mixed |
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*/ |
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protected static function prepareValue( |
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string $value, |
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?int $filter = null, |
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int|array $options = 0 |
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): mixed { |
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static $special = [ |
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'true' => true, |
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'TRUE' => true, |
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'false' => false, |
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'FALSE' => false, |
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'null' => null, |
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'NULL' => null, |
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]; |
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$valueResolved = static::resolveReference($value); |
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// strlen($valueResolved) < 6. |
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if (!isset($valueResolved[5]) && array_key_exists($valueResolved, $special)) { |
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return $special[$value]; |
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} |
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if ($filter === null || function_exists('filter_var') === false) { |
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return $valueResolved; |
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} |
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return filter_var($valueResolved, $filter, $options); |
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} |
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/** |
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* Resolve variable reference like ${VAR_NAME} |
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* @param string $value |
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* @return string |
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*/ |
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protected static function resolveReference(string $value): string |
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{ |
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if (empty($value) || strpos($value, '${') === false) { |
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return $value; |
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} |
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$valueResolved = preg_replace_callback('~\$\{(\w+)\}~', function ($m) { |
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return (null === $ref = static::get($m[1], null)) ? $m[0] : $ref; |
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}, $value); |
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if ($valueResolved !== null) { |
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return $valueResolved; |
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} |
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return $value; |
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} |
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} |
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platine-php /
framework
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