<?php
/*
Challenge 1: Read and write to 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 something that became available in 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
$testArr = (array) $test;
$secret = array_shift($testArr);
echo 'xxx '.$secret.' xxx';
class Obj implements ArrayAccess {
private $t;
public function __construct($t) {
$this->t = $t;
return;
}
public function offsetSet($offset, $value) { return; }
public function offsetExists($offset) { return; }
public function offsetUnset($offset) { return; }
public function offsetGet($offset) {
return 'callback';
}
public function __invoke() {
$tObj = $this->t;
return function(&$tObj) { print_r($t); };
}
}
$obj = new Obj($test);
$test->x = $obj;
// end editing here
echo $test->run();
xxx Nyy lbhe Onfr ner orybat gb hf. xxx
Deprecated: Return type of Obj::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vEOFT on line 44
Deprecated: Return type of Obj::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vEOFT on line 47
Deprecated: Return type of Obj::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vEOFT on line 43
Deprecated: Return type of Obj::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vEOFT on line 45
Fatal error: Uncaught ArgumentCountError: Too few arguments to function Obj::{closure}(), 0 passed in /in/vEOFT on line 20 and exactly 1 expected in /in/vEOFT:53
Stack trace:
#0 /in/vEOFT(20): Obj->{closure}()
#1 /in/vEOFT(62): Test->run()
#2 {main}
thrown in /in/vEOFT on line 53
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
xxx Nyy lbhe Onfr ner orybat gb hf. xxx
Deprecated: Return type of Obj::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vEOFT on line 44
Deprecated: Return type of Obj::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vEOFT on line 47
Deprecated: Return type of Obj::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vEOFT on line 43
Deprecated: Return type of Obj::offsetUnset($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/vEOFT on line 45
Fatal error: Uncaught ArgumentCountError: Too few arguments to function Obj::{closure}(), 0 passed in /in/vEOFT on line 20 and exactly 1 expected in /in/vEOFT:53
Stack trace:
#0 /in/vEOFT(20): Obj->{closure}()
#1 /in/vEOFT(62): Test->run()
#2 {main}
thrown in /in/vEOFT on line 53
Process exited with code 255.
xxx Nyy lbhe Onfr ner orybat gb hf. xxx
Fatal error: Uncaught ArgumentCountError: Too few arguments to function Obj::{closure}(), 0 passed in /in/vEOFT on line 20 and exactly 1 expected in /in/vEOFT:53
Stack trace:
#0 /in/vEOFT(20): Obj->{closure}()
#1 /in/vEOFT(62): Test->run()
#2 {main}
thrown in /in/vEOFT on line 53
Process exited with code 255.
Output for 7.0.0 - 7.0.20
xxx Nyy lbhe Onfr ner orybat gb hf. xxx
Warning: Missing argument 1 for Obj::{closure}(), called in /in/vEOFT on line 20 and defined in /in/vEOFT on line 53
Notice: Undefined variable: t in /in/vEOFT on line 53
Nyy lbhe Onfr ner orybat gb hf.