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

   1 <?php
   2
   3 namespace wcf\system;
   4
   5 use wcf\system\exception\SystemException;
   6
   7 /**
   8  * Represents a callback
   9  *
  10  * @author  Tim Duesterhus
  11  * @copyright   2001-2019 WoltLab GmbH
  12  * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  13  * @deprecated  since 3.0, use callables and `callable` type hint directly
  14  */
  15 final class Callback
  16 {
  17     /**
  18      * encapsulated callback
  19      * @var callback
  20      */
  21     private $callback;
  22
  23     /**
  24      * Creates new instance of Callback.
  25      *
  26      * @param callback $callback
  27      * @throws  SystemException
  28      */
  29     public function __construct($callback)
  30     {
  31         if (!\is_callable($callback)) {
  32             throw new SystemException('Given callback is not callable.');
  33         }
  34
  35         $this->callback = $callback;
  36     }
  37
  38     /**
  39      * Invokes our callback. All parameters are simply passed through.
  40      *
  41      * @return  mixed
  42      */
  43     public function __invoke()
  44     {
  45         return \call_user_func_array($this->callback, \func_get_args());
  46     }
  47 }