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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 4. No redefining $test 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 Infiltrator implements ArrayAccess { private $key; private $value; public function __construct($target) { $this->target = $target; } public function sneak($key, $value) { $this->key = $key; $this->value = $value; $this->target->$key = $this; } public function offsetGet($offset) { return $this->key; } public function offsetExists($offset) {} public function offsetSet($offset, $value) {} public function offsetUnset($offset) {} public function __toString() { return $this->key; } public function __invoke() { return $this->value; } } $infiltrator = new Infiltrator($test); $infiltrator->sneak('callback', function() {}); $infiltrator->sneak('secret', 'I’m in! Send backup!'); // end editing here echo $test->run();
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of Infiltrator::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KIHHp on line 69 Deprecated: Return type of Infiltrator::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KIHHp on line 64 Deprecated: Return type of Infiltrator::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KIHHp on line 70 Deprecated: Return type of Infiltrator::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KIHHp on line 71 Deprecated: Creation of dynamic property Infiltrator::$target is deprecated in /in/KIHHp on line 53 I’m in! Send backup!
Output for 8.1.0 - 8.1.28
Deprecated: Return type of Infiltrator::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KIHHp on line 69 Deprecated: Return type of Infiltrator::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KIHHp on line 64 Deprecated: Return type of Infiltrator::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/KIHHp on line 70 Deprecated: Return type of Infiltrator::offsetUnset($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/KIHHp on line 71 I’m in! Send backup!
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 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, 8.0.0 - 8.0.30
I’m in! Send backup!
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/KIHHp on line 85
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/KIHHp on line 85
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/KIHHp on line 22
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/KIHHp on line 22
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/KIHHp on line 22
Process exited with code 255.
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