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<?php class Foo { protected $callback; public function setCallback($callback) { $this->callback = $callback; } public function callCallback() { return call_user_func($this->callback); } } class Bar { protected $foo; public function __construct(Foo $foo) { $this->foo = $foo; $self = $this; $callback = function() use ($self) { return $self->protectedCallback(); }; $this->foo->setCallback($callback); } protected function protectedCallback() { return "callback called"; } } $foo = new Foo; $bar = new Bar($foo); echo $foo->callCallback();
Output for git.master, git.master_jit, rfc.property-hooks
callback called

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