<?php class Action { public $callback = null; public function __construct(callable $callback) { $this->callback = $callback; } public function __call($method, $args) { if ($method === 'callback') { return call_user_func_array($this->callback, $args); } } } $action = new Action(function($value) { // do something with $value; return $value; }); echo $action->callback('abc');
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