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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 implements AnswerInterface { public function __toString() { return '4'; } } // end editing here $answer = new Answer; $question = new Question($answer);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Class Answer contains 3 abstract methods and must therefore be declared abstract or implement the remaining methods (AnswerInterface::get, AnswerInterface::the, AnswerInterface::answer) in /in/ORC4U on line 28
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Class Answer contains 3 abstract methods and must therefore be declared abstract or implement the remaining methods (AnswerInterface::get, AnswerInterface::the, AnswerInterface::answer) in /in/ORC4U on line 28
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Class Answer contains 3 abstract methods and must therefore be declared abstract or implement the remaining methods (AnswerInterface::get, AnswerInterface::the, AnswerInterface::answer) in /in/ORC4U on line 36
Process exited with code 255.
Output for 5.0.5
Fatal error: Class Answer contains 3 abstract methods and must therefore be declared abstract or implement the remaining methods (AnswerInterface::get, AnswerInterface::the, AnswerInterface::answer, ...) in /in/ORC4U on line 36
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Fatal error: Class Answer contains 3 abstract methods and must therefore be declared abstract (AnswerInterface::get, AnswerInterface::the, AnswerInterface::answer, ...) in /in/ORC4U on line 36
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/ORC4U 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/ORC4U 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/ORC4U on line 9
Process exited with code 255.
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