Online PHP editor | output for k7Z9r

<?php class Book { private $bookProperties; private $bookMethods; public function __construct(Array $properties = []) { $this->bookProperties = array(); $this->bookMethods = array(); foreach ($properties as $property => $value) { $this->bookProperties[$property] = $value; } } public function __get($property) { if (!in_array($property, $this->bookProperties)) { var_dump($this->bookProperties); throw new \Exception('No such property: ' . $property); } else { return $this->bookProperties[$property]; } } public function __set($property, $value) { $this->bookProperties[$property] = $value; } public function addMethod($methodName, $methodCallable) { if (!is_callable($methodCallable)) { throw new InvalidArgumentException('Second parameter must be callable'); } else { $this->bookMethods[$methodName] = $methodCallable; } } public function __call($methodName, Array $args) { if (!in_array($methodName, $this->bookMethods)) { throw new \Exception('No such method: ' . $methodName); } else { return call_user_func_array([$this, $methodName], $args); } } } $book = new Book; $book->title = 'Code Complete'; print $book->title;