Online PHP editor | output for 7uuPQ

<?php class Intercept { protected $class = null; protected $callback = null; public function __construct($class, $callback = null) { $this->class = new $class(); $this->callback = $callback; } protected function run_callback() { {$this->callback}(); } public function __get($name) { $this->run_callback(); return $this->class->$name; } public function __set($name, $value) { $this->run_callback(); return $this->class->$name = $value; } public function __isset($name) { $this->run_callback(); return isset($this->class->$name); } public function __unset($name) { $this->run_callback(); unset($this->class->$name); } public function __call($method, $args) { $this->run_callback(); return call_user_func_array(array($this->class, $method), $args); } public function __toString() { $this->run_callback(); return $this->class; } public function __invoke() { $this->run_callback(); return $this->class(); } } class test { public function hello() { return 'world'; } } $closure = function() { echo 123; }; $test=new Intercept('test', $closure); echo $test->hello();