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run code in 150+ php & hhvm versions
Bugs & Features
<?php /* Challenge 3: Use reflection to get access to Question::$answer from $e->getAnswer */ class Question { private $answer = 42; public function __construct($e) { try { throw $e; } catch (Exception $e) { echo $e->getAnswer($this) . PHP_EOL; } } } // start editing here class exceptionFun extends Exception { public function getAnswer($that) { // Closure::bind() actually creates a new instance of the closure $answerTime = Closure::bindTo($this->getPrivate($that)); var_dump($answerTime); } public function getPrivate($that) { return $that->answer; } } $e = new exceptionFun(); // end editing here new Question($e);
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Non-static method Closure::bindTo() cannot be called statically in /in/lmQfI:33 Stack trace: #0 /in/lmQfI(16): exceptionFun->getAnswer(Object(Question)) #1 /in/lmQfI(51): Question->__construct(Object(exceptionFun)) #2 {main} thrown in /in/lmQfI on line 33
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Cannot access private property Question::$answer in /in/lmQfI on line 42
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.0 - 5.6.28
Fatal error: Non-static method Closure::bindTo() cannot be called statically, assuming $this from incompatible context in /in/lmQfI on line 33
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Fatal error: Call to undefined method Closure::bindTo() in /in/lmQfI on line 33
Process exited with code 255.
Output for 5.0.0 - 5.2.17
Fatal error: Class 'Closure' not found in /in/lmQfI on line 33
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/lmQfI on line 9
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/lmQfI on line 9
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/lmQfI on line 9
Process exited with code 255.