Online PHP editor | refs for 8I4Tb

<?php class Proxy { private $object; private $onEnter = []; private $onLeave = []; public function __registerOnEnter($method, \Closure $closure) { $this->onEnter[$method][] = $closure; } private function invokeOnEnter($method, array $arguments) { if (empty($this->onEnter[$method])) { return; } foreach ($this->onEnter[$method] as $closure) { call_user_func($closure, $this->object, $arguments); } } public function __registerOnLeave($method, \Closure $closure) { $this->onLeave[$method][] = $closure; } private function invokeOnLeave($method, array $arguments) { if (empty($this->onLeave[$method])) { return; } foreach ($this->onLeave[$method] as $closure) { call_user_func($closure, $this->object, $arguments); } } private function getProxiedMethod($method) { $methodReflection = new \ReflectionMethod($this->object, $method); return $methodReflection->getClosure($this->object)->bindTo($this); } public function __call($method, array $arguments) { $this->invokeOnEnter($method, $arguments); call_user_func_array($this->getProxiedMethod($method), $arguments); $this->invokeOnLeave($method, $arguments); } public function __construct($object) { $this->object = (object) $object; } } class Foo { public function bar() { $this->qux(); } public function qux() { $this->zip(); } public function zip() { var_dump(__CLASS__); } } $fooProxy = new Proxy(new Foo()); $fooProxy->__registerOnEnter('bar', function ($object) { var_dump(sprintf('%s::bar#onEnter', get_class($object))); }); $fooProxy->__registerOnLeave('bar', function ($object) { var_dump(sprintf('%s::bar#onLeave', get_class($object))); }); $fooProxy->__registerOnEnter('qux', function ($object) { var_dump(sprintf('%s::qux#onEnter', get_class($object))); }); $fooProxy->__registerOnLeave('qux', function ($object) { var_dump(sprintf('%s::qux#onLeave', get_class($object))); }); $fooProxy->__registerOnEnter('zip', function ($object) { var_dump(sprintf('%s::zip#onEnter', get_class($object))); }); $fooProxy->__registerOnLeave('zip', function ($object) { var_dump(sprintf('%s::zip#onLeave', get_class($object))); }); $fooProxy->bar();