3v4l.org

run code in 300+ PHP versions simultaneously
<?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 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; } } $test = new Test; // start editing here class Intercept { public function getKey($test) { $array = (array) $test; foreach($array as $k => $v) { print_r($k); } } } $intercept = new Intercept; $intercept->getKey($test); // end editing here echo $test->run();
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
TestsecretTestcallback Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, no array or string given in /in/lv1mU:28 Stack trace: #0 /in/lv1mU(65): Test->run() #1 {main} thrown in /in/lv1mU on line 28
Process exited with code 255.
Output for 8.0.0 - 8.0.9
TestsecretTestcallback Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($function) must be a valid callback, no array or string given in /in/lv1mU:28 Stack trace: #0 /in/lv1mU(65): Test->run() #1 {main} thrown in /in/lv1mU on line 28
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
TestsecretTestcallback Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/lv1mU on line 28 Nyy lbhe Onfr ner orybat gb hf.
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
TestsecretTestcallback Warning: call_user_func(): First argument is expected to be a valid callback in /in/lv1mU on line 28 Nyy lbhe Onfr ner orybat gb hf.
Output for 5.0.0 - 5.0.1
TestsecretTestcallback Warning: call_user_func(): First argument is expected to be a valid callback in /in/lv1mU on line 28 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/lv1mU on line 29 Nyy lbhe Onfr ner orybat gb hf.PHP_EOL
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/lv1mU 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/lv1mU 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/lv1mU on line 22
Process exited with code 255.
preferences:
258.87 ms | 401 KiB | 372 Q