Online PHP editor | output for 4VGQe

@ 2014-04-10T11:34:11Z

<?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

$test->callback = function(){

}


// end editing here

echo $test->run();

Output for 5.4.0 - 5.4.27: Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/4VGQe on line 53
Process exited with code 255.
Output for 5.3.0 - 5.3.28: Parse error: syntax error, unexpected T_ECHO in /in/4VGQe on line 53
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/4VGQe on line 46
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_FUNCTION in /in/4VGQe on line 46
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/4VGQe 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/4VGQe 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/4VGQe on line 22
Process exited with code 255.

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