<?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 get()
{
}
public function the()
{
}
public function answer()
{
}
}
// end editing here
$answer = new Answer;
$question = new Question($answer);
What is 2 + 2?
Fatal error: Uncaught Error: Call to a member function the() on null in /in/3eCW5:12
Stack trace:
#0 /in/3eCW5(46): Question->__construct(Object(Answer))
#1 {main}
thrown in /in/3eCW5 on line 12
Process exited with code 255.
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/3eCW5 on line 28
What is 2 + 2?
Fatal error: Uncaught Error: Call to a member function the() on null in /in/3eCW5:12
Stack trace:
#0 /in/3eCW5(46): Question->__construct(Object(Answer))
#1 {main}
thrown in /in/3eCW5 on line 12
Process exited with code 255.
Output for 5.6.0 - 5.6.40
What is 2 + 2?
Fatal error: Call to a member function the() on null in /in/3eCW5 on line 12
Process exited with code 255.
What is 2 + 2?
Fatal error: Call to a member function the() on a non-object in /in/3eCW5 on line 12
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/3eCW5 on line 9
Process exited with code 255.
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/3eCW5 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/3eCW5 on line 9
Process exited with code 255.