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<?php /* Challenge 2: Implement AnswerInterface and get Question to echo "4". */ class Question { public function __construct(AnswerInterface $answer) { echo "What is 2 + 2?\n"; $answer = $answer->get()->the()->answer(); if ($answer instanceof AnswerInterface) { echo $answer . PHP_EOL; } } } interface AnswerInterface { public function get(); public function the(); public function answer(); } // start editing here class Answer { 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);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Question::__construct(): Argument #1 ($answer) must be of type AnswerInterface, Answer given, called in /in/VEIQI on line 45 and defined in /in/VEIQI:9 Stack trace: #0 /in/VEIQI(45): Question->__construct(Object(Answer)) #1 {main} thrown in /in/VEIQI on line 9
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Answer has a deprecated constructor in /in/VEIQI on line 28 Fatal error: Uncaught TypeError: Argument 1 passed to Question::__construct() must implement interface AnswerInterface, instance of Answer given, called in /in/VEIQI on line 45 and defined in /in/VEIQI:9 Stack trace: #0 /in/VEIQI(45): Question->__construct(Object(Answer)) #1 {main} thrown in /in/VEIQI on line 9
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Fatal error: Uncaught TypeError: Argument 1 passed to Question::__construct() must implement interface AnswerInterface, instance of Answer given, called in /in/VEIQI on line 45 and defined in /in/VEIQI:9 Stack trace: #0 /in/VEIQI(45): Question->__construct(Object(Answer)) #1 {main} thrown in /in/VEIQI on line 9
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Catchable fatal error: Argument 1 passed to Question::__construct() must implement interface AnswerInterface, instance of Answer given, called in /in/VEIQI on line 45 and defined in /in/VEIQI on line 9
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Fatal error: Argument 1 passed to Question::__construct() must implement interface AnswerInterface, called in /in/VEIQI on line 45 and defined in /in/VEIQI on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Argument 1 must implement interface AnswerInterface in /in/VEIQI on line 9
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/VEIQI on line 9
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/VEIQI 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/VEIQI on line 9
Process exited with code 255.
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