3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php /* Challenge 2: Implement AnswerInterface and get Question to echo "4". */ class Question { public function __construct(AnswerInterface $answer) { echo "What is 2 + 2?\n"; $anaaswer = $answer->get()->the()->_answer(); if ($answer instanceof AnswerInterface) { echo $anaaswer . PHP_EOL; } } } interface AnswerInterface { public function get(); public function the(); public function _answer(); } // start editing here class Answer implements AnswerInterface { public function get() { return $this; } public function the() { return $this; } public function _answer() { return 4; } } // end editing here $answer = new Answer; $question = new Question($answer);
based on vkYam
Output for 5.0.2 - 7.2.0
What is 2 + 2? 4
Output for 5.0.0 - 5.0.1
What is 2 + 2? Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/drHBY on line 13 4PHP_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/drHBY on line 8
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/drHBY on line 8
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/drHBY on line 8
Process exited with code 255.