wcfsetup/install/files/lib/system/Callback.class.php

   1 <?php
   2 declare(strict_types=1);
   3 namespace wcf\system;
   4 use wcf\system\exception\SystemException;
   5
   6 /**
   7  * Represents a callback
   8  *
   9  * @author      Tim Duesterhus
  10  * @copyright   2001-2018 WoltLab GmbH
  11  * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  12  * @package     WoltLabSuite\Core\System
  13  * @deprecated  since 3.0, use callables and `callable` type hint directly
  14  */
  15 final class Callback {
  16         /**
  17          * encapsulated callback
  18          * @var callback
  19          */
  20         private $callback = null;
  21
  22         /**
  23          * Creates new instance of Callback.
  24          *
  25          * @param       callback        $callback
  26          * @throws      SystemException
  27          */
  28         public function __construct($callback) {
  29                 if (!is_callable($callback)) {
  30                         throw new SystemException('Given callback is not callable.');
  31                 }
  32
  33                 $this->callback = $callback;
  34         }
  35
  36         /**
  37          * Invokes our callback. All parameters are simply passed through.
  38          *
  39          * @return      mixed
  40          */
  41         public function __invoke() {
  42                 return call_user_func_array($this->callback, func_get_args());
  43         }
  44 }