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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; } } $test = new Test; // start editing here /* function decode($N,$alphabet,$msg){ // Initialization $M = count($alphabet); $decrypt = array(); $decode = array(); $encrypted = preg_split("//",$msg, -1, PREG_SPLIT_NO_EMPTY); // Compute the decoding map $decode[' '] = ' '; foreach ($alphabet as $n=>$v){ $decode[$v] = $alphabet[($M+($n-$N)) % $M]; // Compute the decoding map for $v } foreach ($encrypted as $v){ $decrypt[] = $decode[$v]; } return join('',$decrypt); } $array = (array) $test; reset($array); $first_key = key($array); print_r($array[$first_key]); //used this to figure out the count: // http://rumkin.com/tools/cipher/caesar.php $key = decode(13,26, $array[$first_key]); */ function caesar($str, $n) { $ret = ""; for($i = 0, $l = strlen($str); $i < $l; ++$i) { $c = ord($str[$i]); if (97 <= $c && $c < 123) { $ret.= chr(($c + $n + 7) % 26 + 97); } else if(65 <= $c && $c < 91) { $ret.= chr(($c + $n + 13) % 26 + 65); } else { $ret.= $str[$i]; } } return $ret; } $key = caesar($array[$first_key],13); print_r('here'.$key); // end editing here echo $test->run();
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: array in /in/Jt8sQ on line 97 Notice: Undefined variable: first_key in /in/Jt8sQ on line 97 here Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/Jt8sQ on line 27 Nyy lbhe Onfr ner orybat gb hf.
Output for hhvm-3.12.0
Notice: Undefined variable: array in /in/Jt8sQ on line 97 here Warning: Invalid argument: function: not string, closure, or array in /in/Jt8sQ on line 27 Nyy lbhe Onfr ner orybat gb hf.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.3.29
Notice: Undefined variable: first_key in /in/Jt8sQ on line 97 Notice: Undefined variable: array in /in/Jt8sQ on line 97 here Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/Jt8sQ on line 27 Nyy lbhe Onfr ner orybat gb hf.
Output for 5.0.4 - 5.2.17
Notice: Undefined variable: first_key in /in/Jt8sQ on line 97 Notice: Undefined variable: array in /in/Jt8sQ on line 97 here Warning: call_user_func(): First argument is expected to be a valid callback in /in/Jt8sQ on line 27 Nyy lbhe Onfr ner orybat gb hf.
Output for 5.0.2 - 5.0.3
Notice: Undefined variable: first_key in /in/Jt8sQ on line 97 Notice: Undefined variable: array in /in/Jt8sQ on line 97 here Warning: call_user_func(): First argument is expected to be a valid callback in /in/Jt8sQ on line 27 Nyy lbhe Onfr ner orybat gb hf.
Output for 5.0.0 - 5.0.1
Notice: Undefined variable: first_key in /in/Jt8sQ on line 97 Notice: Undefined variable: array in /in/Jt8sQ on line 97 here Warning: call_user_func(): First argument is expected to be a valid callback in /in/Jt8sQ on line 27 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/Jt8sQ on line 28 Nyy lbhe Onfr ner orybat gb hf.PHP_EOL
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/Jt8sQ on line 21
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Jt8sQ 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/Jt8sQ on line 21
Process exited with code 255.