Php Quiz System

[umarrana]

hi dear friends i am working on a simple quiz system can someone help in this here is my form how can i check the true questions in php please help me thanks

 

<form  method="post" name="test">

                <div class="tst">What is Your Name</div> 
                <input type="radio" name="a1" value="false" /> A
                <input type="radio" name="a1" value="true" /> B
                <input type="radio" name="a1" value="false" /> C

                
                <div class="tst">What is Your Country Name</div>
              <input type="radio" name="a2" value="true" /> A
              <input type="radio" name="a2" value="false" /> B
              <input type="radio" name="a2" value="false" /> C
		 <div class="tst">What is Your City name</div>
             <input type="radio" name="a3" value="true" /> A
             <input type="radio" name="a3" value="false" /> B
             <input type="radio" name="a3" value="false" /> C

                
                <div class="tst">What is Your Aera Name</div>
               <input type="radio" name="a4" value="false" /> A
               <input type="radio" name="a4" value="false" /> B
               <input type="radio" name="a4" value="true" /> C
               
               
                <input name="sbt" type="submit" id="sbt" value="Submit Anwsers" />
</form>

[umarrana]

i am trying this way but its not working for me

 

if($_POST['sbt'] == "Submit Anwsers")
    {
      $nofq = 4;
	for($i = 1; $i <= $nofq; $i++)
	{
		if($_POST['q'.$i] == "true")
		{
			$msg .= "this is true";
		}else
		{
			$msg .= "this is false";
		}

	}

}

[ignace]

I advice you not to add the answer in the source code (true, false) Anyone with a little understanding of HTML can easily see which are the correct answers.

 

<form action="" method="post" id="quiz">
  <div class="question">What is your name?</div>
  <div class="answer">
    <label><input type="radio" name="a[0]" value="A" /> A</label>
    ..
  </div>
  
  <div class="question">What is your country name?</div>
  <div class="answer">
     <label><input type="radio" name="a[1]" value="1" /> 1</label>
     ..
  </div>
  
   ..
</form>

<?php

if ('post' === strtolower($_SERVER['REQUEST_METHOD'])) {
  require_once('class.quiz.php');
  require_once('class.question.php');
  require_once('class.answer.php');
  
  $question = new Question('What is your name?');
  $question->addAnswer(new Answer('A'));
  $question->addAnswer(new Answer('B'));
  ..
  
  $question->setAnswer(new Answer($_POST['a'][0]));
  $question->setCorrectAnswer(new Answer('B'));
  
  $quiz->addQuestion($question);
  echo $quiz->getCorrectAnswersTotal(), '/', $quiz->getQuestionsTotal();
}?>

 

I build my quiz after the user submits his answers however normally you would build it from a SQL query and use it to render your form. Below are the classes used:

 

class Quiz {
  protected $_questions;
  public function __construct(ArrayObject $questions = null) {
    $this->setQuestions($questions ? $questions : new ArrayObject());
  }
  public function setQuestions(ArrayObject $questions) {
    $this->_questions = $questions;
  }
  public function addQuestion(Question $question) {
    $this->getQuestions()->append($question);
  }
  public function addQuestions(ArrayObject $questions) {
    foreach ($questions as $question) {
      $this->addQuestion($question);
    }
  }
  public function getQuestions() {
    return $this->_questions;
  }
  public function getQuestionsTotal() {
    return $this->_questions->count();
  }
  public function getCorrectAnswersTotal() {
    $correctAnswers = 0;
    foreach ($this->getQuestions() as $question) {
      if ($question->answeredCorrect()) ++$correctAnswers;
    }
    return $correctAnswers;
  }
}
class Question {
  protected $_questionText;
  protected $_answers;
  protected $_correctAnswer;
  protected $_answer;
  public function __construct($questionText, ArrayObject $possibleAnswers = null,
      Answer $correctAnswer = null) {
    $this->_questionText = $questionText;
    $this->setAnswers($possibleAnswers);
  }
  public function setCorrectAnswer(Answer $correct) {
    $this->_correctAnswer = $correct;
  }
  public function setAnswer(Answer $answer) {
    $this->_answer = $answer;
  }
  public function setAnswers(ArrayObject $answers) {
    $this->_answers = $answers;
  }
  public function addAnswer(Answer $answer) {
    $this->getAnswers()->append($answer);
  }
  public function addAnswers(ArrayObject $answers) {
    foreach ($answers as $answer) {
      $this->addAnswer($answer);
    }
  }
  public function getAnswers() {
    return $this->_answers;
  }
  public function answeredCorrect() {
    return $this->_correctAnswer->equals($this->_answer);
  }
}
class Answer {
  protected $_answerText;
  public function __construct($answerText) {
    $this->_answerText = $answerText;
  }
  public function getAnswerText() {
    return $this->_answerText;
  }
  public function equals(Answer $answer) {
    return $this->getAnswerText() === $answer->getAnswerText();
  }
}

 

You may also want to add a serialize magic method to store them in the database.

[umarrana]

you are right anyone can see anwser i am must be a stupid

i am trying to use this code but it showing me this error

 

 

 

Catchable fatal error: Argument 1 passed to Question::setAnswers() must be an instance of ArrayObject, null given, called in E:\Websites\www\test\class.question.php on line 9

[ignace]

Post your code

[umarrana]

class codes are same you posted

<form action="" method="post" id="quiz">
    <div class="question">What is your name?</div>
    <div class="answer">
        <label>
            <input type="radio" name="a[0]" value="A" />
            A</label>
        .. </div>
    <div class="question">What is your country name?</div>
    <div class="answer">
        <label>
            <input type="radio" name="a[1]" value="1" />
            1</label>
        .. </div>
    ..
</form>
<?php 
if ('post' === strtolower($_SERVER['REQUEST_METHOD'])) {
    require_once('class.quiz.php');
    require_once('class.question.php');
    require_once('class.answer.php');
    $question = new Question('What is your name?');
    $question->addAnswer(new Answer('A'));
    $question->addAnswer(new Answer('B'));
    $question->setAnswer(new Answer($_POST['a'][0]));
    $question->setCorrectAnswer(new Answer('B'));
    $quiz->addQuestion($question);
    echo $quiz->getCorrectAnswersTotal(), '/', $quiz->getQuestionsTotal();
}
?>

[ignace]

Modify this line

 

$this->setAnswers($possibleAnswers);

 

$this->setAnswers($possibleAnswers ? $possibleAnswers : new ArrayObject());

 

Please note that the provided code is just an example and was not intended for production usage.