Online PHP editor | refs for Yr19p

<?php trait Immutable { public function __set($name, $value) { throw new Exception("can't touch this, nah nah nuh nahhh"); } public function __get($name) { return $this->$name; } } class ImmutableThingy { use Immutable; protected $foo; public function __construct($foo) { $this->foo = $foo; } } $thing = new ImmutableThingy("bar"); var_dump($thing, $thing->foo); $thing->foo = 'baz'; var_dump($thing, $thing->foo);