38 lines
1 KiB
PHP
38 lines
1 KiB
PHP
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<?php defined('BASEPATH') or exit('No direct script access allowed');
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/* ----------------------------------------------------------------------------
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* Easy!Appointments - Open Source Web Scheduler
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*
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* @package EasyAppointments
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* @author A.Tselegidis <alextselegidis@gmail.com>
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* @copyright Copyright (c) 2013 - 2020, Alex Tselegidis
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* @license http://opensource.org/licenses/GPL-3.0 - GPLv3
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* @link http://easyappointments.org
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* @since v1.1.0
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* ---------------------------------------------------------------------------- */
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if ( ! function_exists('env'))
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{
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/**
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* Gets the value of an environment variable.
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*
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* Example:
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*
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* $debug = env('debug', FALSE);
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*
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* @param string $key
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* @param mixed $default
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*
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* @return mixed
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*/
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function env(string $key, $default = NULL)
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{
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if (empty($key))
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{
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throw new InvalidArgumentException('The $key argument cannot be empty.');
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}
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return $_ENV[$key] ?? $default;
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}
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}
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