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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"; $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"; } public function get() { return new Answer();} public function the() { return new Answer();} public function answer() { return new Answer();} } // end editing here $answer = new Answer; $question = new Question($answer);
Output for 7.0.0 - 7.1.0
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/W8Qh5 on line 29 Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 262144 bytes) in /in/W8Qh5 on line 34
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.6.0 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/W8Qh5 on line 34
Process exited with code 255.
Output for 5.5.0 - 5.5.36
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 130968 bytes) in /in/W8Qh5 on line 34
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 523800 bytes) in /in/W8Qh5 on line 34
Process exited with code 255.
Output for 5.0.0 - 5.2.17

Process exited with code 139.
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/W8Qh5 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/W8Qh5 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/W8Qh5 on line 9
Process exited with code 255.