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<?php /* Challenge 1: Modify Test::$secret before it's output. Rules:: 1. No use of Reflection API / runkit extension 2. No stopping execution before Test::run() 3. No Exceptions or PHP errors / warnings notices allowed Hints: 1. Caesar 2. Magic methods 3. Requires a new feature of PHP 5.4 */ class Test { private $secret = 'Nyy lbhe Onfr ner orybat gb hf.'; private $callback; final public function run() { call_user_func($this->callback); return $this->secret . PHP_EOL; } public function __set($k, $v) { $key = $v[($v[$v])]; // $v is some kind of weird array $value = $v(); // and a callback! $this->{$key} = $value; } } $test = new Test; // start editing here class Fixer extends ArrayObject { public $k; public $v; public function offsetGet($i) { return $this->k; } public function __construct($k, $v) { $this->k = $k; $this->v = $v; } public function __invoke() { return $this->v; } } $test->foo = new Fixer('callback', function() {}); // modifying secret, but no access to read it $test->foo = new Fixer('secret', 'All your Base are belong to us.'); // end editing here echo $test->run();
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of Fixer::offsetGet($i) should either be compatible with ArrayObject::offsetGet(mixed $key): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Z1YE5 on line 53 All your Base are belong to us.

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