<?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()
{
return $this;
}
public function the()
{
return $this;
}
public function answer()
{
return $this;
}
public function __toString()
{
return '4';
}
}
// end editing here
$answer = new Answer;
$question = new Question($answer);
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/FdkBO on line 28
What is 2 + 2?
4
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6
What is 2 + 2?
Object id #1
Output for 5.0.0 - 5.0.1
What is 2 + 2?
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/FdkBO on line 15
Object id #1PHP_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/FdkBO 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/FdkBO 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/FdkBO on line 9
Process exited with code 255.