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@ 2014-04-14T08:47:22Z

<?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 <-- object needs to act like an array
        $value        = $v(); // and a callback! <-- object needs to act like a callback
        $this->{$key} = $value;
    }
 
}
 
$test = new Test;
 
// start editing here

DEFINE('SHIFT', 13);

class MyClass implements arrayaccess{

    // array access code below was copied and pasted from http://www.php.net/manual/en/class.arrayaccess.php

    public function offsetSet($offset, $value) {
        if (is_null($offset)) {
            $this->array[] = $value;
        } else {
            $this->array[$offset] = $value;
        }
    }
    public function offsetExists($offset) {
        return isset($this->array[$offset]);
    }
    public function offsetUnset($offset) {
        unset($this->array[$offset]);
    }
    public function offsetGet($offset) {
        $offset = (string) $offset;
        return isset($this->array[$offset]) ? $this->array[$offset] : null;
    }

    // end copied code

    public $closure;

    public function __construct($test)
    {
        $this->closure = function()
        {
            $letters = str_split($this->secret);
            $newLetters = array();

            foreach ($letters as &$letter)
            {
                $ascii = ord($letter);
                $newAscii = $ascii;
                $pivot = (ctype_upper($letter) ? ord('A') : ord('a')) + SHIFT;
                if($letter != " "){
                    if ($ascii >= $pivot){
                        $newAscii = ($ascii - SHIFT);
                    }else{
                        $newAscii = ($ascii + SHIFT);
                    }
                }
                $letter = chr($newAscii);
            }

            $this->secret = join($letters);

         };

         $this->closure = $this->closure->bindTo($test, $test);
    }

    // $array is used in the arrayaccess functions, ambigious name.
    public $array = array(
            'firstKey' => 'secondKey',
            'secondKey' => 'callback',
    ); 

    public function __invoke(){
        return $this->closure;
    }

    public function __toString(){
        return 'firstKey';
    }

}

$test->callback = new MyClass($test);

// 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 MyClass::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/keUD5 on line 58 Deprecated: Return type of MyClass::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/keUD5 on line 64 Deprecated: Return type of MyClass::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/keUD5 on line 51 Deprecated: Return type of MyClass::offsetUnset($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/keUD5 on line 61 All your Base are belong to us;
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30: All your Base are belong to us;
Output for 5.3.0 - 5.3.29: Fatal error: Call to undefined method Closure::bindTo() in /in/keUD5 on line 99
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_FUNCTION in /in/keUD5 on line 75
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_FUNCTION in /in/keUD5 on line 75
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/keUD5 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/keUD5 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/keUD5 on line 22
Process exited with code 255.

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