3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?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 class MyClass implements arrayaccess{ public $closure; public function __construct($test){ $this->closure = function(){ echo 'nearly there! just need to reshuffle the letters now, can set secret too as its not in scope.'; }; $this->closure = $this->closure->bindTo($test); // I dont really understand what this is doing } public function __toString(){ // Object of class V could not be converted to string; return 'firstKey'; } // array access stuff below was copied and pasted from http://www.php.net/manual/en/class.arrayaccess.php public $array = array( 'firstKey' => 'secondKey', 'secondKey' => 'callback', ); public function offsetSet($offset, $value) { if (is_null($offset)) { $this->array[] = $value; } else { $this->array[$offset] = $value; } } public function offsetExists($offset) { return isset($this->array[$offset]); } public function offsetUnset($offset) { unset($this->array[$offset]); } public function offsetGet($offset) { $offset = (string) $offset; return isset($this->array[$offset]) ? $this->array[$offset] : null; } } $test->callback = new MyClass($test); // end editing here echo $test->run();
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Function name must be a string in /in/Q6aAQ:35 Stack trace: #0 /in/Q6aAQ(93): Test->__set('callback', Object(MyClass)) #1 {main} thrown in /in/Q6aAQ on line 35
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Fatal error: Function name must be a string in /in/Q6aAQ on line 35
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Fatal error: Call to undefined method Closure::bindTo() in /in/Q6aAQ on line 57
Process exited with code 255.
Output for 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/Q6aAQ on line 54
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/Q6aAQ on line 54
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/Q6aAQ on line 22
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Q6aAQ 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/Q6aAQ on line 22
Process exited with code 255.