- var_dump: documentation ( source)
<?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;
}
}
$test = new Test;
// start editing here
class A implements ArrayAccess {
public function __call($name, $args){
return function(){
echo "HELLO WORLD";
};
}
public function offsetSet($offset, $value) {}
public function offsetExists($offset) { return true; }
public function offsetUnset($offset) {}
public function offsetGet($offset) {
if (is_object($offset)){
$r = "a";
} else {
$r = $this;
}
var_dump($r);die;
}
}
$test->foo = new A;
// end editing here
echo $test->run();