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<?php interface Doll { function __invoke(); } class LargeDoll implements Doll { private $inner; function __construct(Doll $inner) { $this->inner = $inner; } function __invoke() { return ($this->inner)() . ' world'; } } class SmallDoll implements Doll { function __invoke() { return 'hello'; } } $russian = new LargeDoll(new SmallDoll()); var_dump($russian());
Output for git.master, git.master_jit, rfc.property-hooks
string(11) "hello world"

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