<?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} = $value;
}
}
class TestM extends Test {
public function foo(&$obj){
$obj->secret = "HELLO WORLD";
}
}
$test = new Test;
// start editing here
$testM = new TestM;
$testM->foo($test);
// end editing here
echo $test->run();
Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/AReH4:33
Stack trace:
#0 /in/AReH4(43): Test->__set('secret', 'HELLO WORLD')
#1 /in/AReH4(55): TestM->foo(Object(Test))
#2 {main}
thrown in /in/AReH4 on line 33
Process exited with code 255.
Warning: Illegal string offset 'HELLO WORLD' in /in/AReH4 on line 33
Warning: Illegal string offset 'H' in /in/AReH4 on line 33
Fatal error: Uncaught Error: Call to undefined function HELLO WORLD() in /in/AReH4:34
Stack trace:
#0 /in/AReH4(43): Test->__set('secret', 'HELLO WORLD')
#1 /in/AReH4(55): TestM->foo(Object(Test))
#2 {main}
thrown in /in/AReH4 on line 34
Process exited with code 255.
Warning: Illegal string offset 'HELLO WORLD' in /in/AReH4 on line 33
Warning: Illegal string offset 'H' in /in/AReH4 on line 33
Fatal error: Call to undefined function HELLO WORLD() in /in/AReH4 on line 34
Process exited with code 255.
Fatal error: Call to undefined function HELLO WORLD() in /in/AReH4 on line 34
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Cannot access private property Test::$secret in /in/AReH4 on line 43
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/AReH4 on line 21
Process exited with code 255.
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/AReH4 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/AReH4 on line 21
Process exited with code 255.