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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 foo implements ArrayAccess { private $bar = array('a', 'b', 'callback', 'time', 'c', 'secret', 'whatever'); public function offsetExists ( $offset ) { return true; } public function offsetGet ( $offset ) { return next($this->bar); } public function offsetSet ( $offset, $value ) { } public function offsetUnset ( $offset ) { } public function __invoke() { return next($this->bar); } } $foo = array(); $foo(); $tree = new foo(); $test->hack = $tree; $test->hack = $tree; // end editing here echo $test->run();
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of foo::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/K2DEV on line 49 Deprecated: Return type of foo::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/K2DEV on line 50 Deprecated: Return type of foo::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/K2DEV on line 51 Deprecated: Return type of foo::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/K2DEV on line 52 Fatal error: Uncaught Error: Array callback must have exactly two elements in /in/K2DEV:58 Stack trace: #0 {main} thrown in /in/K2DEV on line 58
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Uncaught Error: Array callback must have exactly two elements in /in/K2DEV:58 Stack trace: #0 {main} thrown in /in/K2DEV on line 58
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Function name must be a string in /in/K2DEV:58 Stack trace: #0 {main} thrown in /in/K2DEV on line 58
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Fatal error: Function name must be a string in /in/K2DEV on line 58
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/K2DEV on line 21
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/K2DEV on line 21
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/K2DEV on line 21
Process exited with code 255.
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