I am fairly new to php. I have classes called quiz and question. And the class quiz can have one or many questions. I have done a java representation
class Question () {
private int id;
private String question;
private String answer;
}
and the quiz class should be as follows,
class Quiz() {
private int id;
private List<Question> questionList;
}
my question is regarding how to represent the above java representation in php. please be kind enough to point me in the right direction.
getter and setter:
class Question {
private $id ;
private $question;
private $answer;
public function __construct(){
}
public function setId($value){
$this->id = $value;
}
public function setQuestion($value){
$this->question = $value;
}
public function setAnswer($value){
$this->answer = $value;
}
public function getId(){
return $this->id;
}
public function getQuestion(){
return $this->question;
}
public function getAnswer(){
return $this->answer;
}
}
class Quiz{
private $id;
private $questionList = array();
public function __construct(){
}
public function setQuestionList($value){
$this->questionList[] = $value;
}
public function getQuestionList(){
return $this->questionList;
}
}
//
$quiz = new Quiz();
//
$question = new Question();
$question->setId(1);
$question->setQuestion('question?');
$question->setAnswer('answer');
//
$quiz->setQuestionList($question);
//
$question = new Question();
$question->setId(2);
$question->setQuestion('question2?');
$question->setAnswer('answer2');
//
$quiz->setQuestionList($question);
//
//Getting questions
foreach($quiz->getQuestionList() as $object){
echo $object->getId().' - '.$object->getQuestion().' - '.$object->getAnswer().'<br />';
}
Generics type don't exist in standard PHP.
One way to represent such structure in PHP is :
class Question
{
private $id;
private $question;
private $answer;
}
class Quiz
{
private $id;
/**
* @var array<Question>
*/
private $questionList = array();
}
The docblock (@var ...) is just here to help others (and IDEs) to understand the structure of $questionList.
To add some check on $questionList content, you can use typed setter/adder :
public function addQuestion(Question $question)
{
$this->questionList[] = $question;
}
