Webbserv1: Källkod
Webbserverprogrammering 1

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webbsrvprg/projects/quiz/

quiz.php
quiz_create.php
quiz_created.php
quiz_home.php
quiz_login.php
quiz_results.php
quiz_signup.php

quiz.php

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<?php
session_start();
?>
<!doctype html>
<html>
<style>
  .red {
    accent-color: red;
  }
  .green {
    accent-color: green;
  }
</style>
<body>
<?php
  if (!isset($_SESSION["question"])) {
    $_SESSION["question"] = 0;
  }
include ('../../dbconnection.php');
$message = null;
    $user = $_SESSION['user'];

?>

<form method="POST" action="">
  <?php
  if ($_SERVER["REQUEST_METHOD"] == "POST") {
    if (!isset($_SESSION["quiz"])) {
      $_SESSION["quiz"] = $_POST["quizChoice"];
      $_SESSION["question_id"] = array();
      $_SESSION["qCorrect"] = 0;
      $quiz = $_SESSION["quiz"];

      $sql = "SELECT * FROM quiz WHERE id='$quiz'";
      $stmt = $dbconn->prepare($sql);
      $data = array();
      $stmt->execute($data);
      $res = $stmt->fetch(PDO::FETCH_ASSOC);
      $_SESSION["qAmount"] = htmlentities($res['quizAmount']);

      $sql = "SELECT * FROM questions WHERE quizid='$quiz'
              ORDER BY id ASC";
      $stmt = $dbconn->prepare($sql);
      $data = array();
      $stmt->execute($data);
      while ($res = $stmt->fetch(PDO::FETCH_ASSOC)) {
        $_SESSION["question_id"][] = htmlentities($res['id']);
      }

      $sql = "SELECT * FROM answers WHERE quizid='$quiz'
              ORDER BY id ASC";
      $stmt = $dbconn->prepare($sql);
      $data = array();
      $stmt->execute($data);
      while ($res = $stmt->fetch(PDO::FETCH_ASSOC)) {
        $_SESSION["answer_id"][] = htmlentities($res['id']);
      }


    }
    else {
      if (isset($_SESSION["question"]) && isset($_POST["question"])) {

        $questionId = $_SESSION["questionC"];
        $_SESSION["qAnswer".$_SESSION["question"]] = $_POST["question"];

        $sql = "SELECT * FROM answers WHERE questionId='$questionId' AND correct='1'";
        $stmt = $dbconn->prepare($sql);
          
        $data = array();  
        $stmt->execute($data);
        $res = $stmt->fetch(PDO::FETCH_ASSOC);
        $hej = htmlentities($res["id"]);
        if ($hej%3 == $_POST["question"]) {
          $_SESSION["qCorrect"] += 1;
        }
    }

    }
    $answers = array();
    $_SESSION["question"] += 1;

    if ($_SESSION["question"] >= $_SESSION["qAmount"]+1) {
      echo "Du hade ".$_SESSION["qCorrect"]." rätt: <a href='quiz_home.php'>Tillbaka till startsidan</a><br><br>";

      $correctAmount = $_SESSION["qCorrect"];
      $user = $_SESSION["user"];
      $sql = "SELECT * FROM quizusers WHERE user ='$user'";
      $stmt = $dbconn->prepare($sql);
      $data = array();
      $stmt->execute($data);

      $res = $stmt->fetch(PDO::FETCH_ASSOC);

      $userId = htmlentities($res["id"]);
      $quizId = $_SESSION["quiz"];

      $sql = "SELECT * FROM results WHERE userId ='$userId' AND quizId = '$quizId'";
      $stmt = $dbconn->prepare($sql);
      $stmt->execute();
      $count = $stmt->fetchColumn();

      if ($count > 0) {
        $sql = "SELECT * FROM results WHERE userId ='$userId' AND quizId = '$quizId'";
        $stmt = $dbconn->prepare($sql);
        $stmt->execute();
        $res = $stmt->fetch(PDO::FETCH_ASSOC);
        if (htmlentities($res["correctAmount"]) < $_SESSION["qCorrect"]) {
          $sql = "UPDATE results SET correctAmount=?
          WHERE userId=?";
          $stmt = $dbconn->prepare($sql);
          $data = array($correctAmount, $userId);
          $stmt->execute($data);
            
          $message .= "<br />Record updated successfully.<br />";
        }
      } else {
        $sql = "INSERT INTO results (userId, quizId, correctAmount) 
        VALUES (?, ?, ?)";
        $stmt = $dbconn->prepare($sql);
        $data = array($userId, $_SESSION["quiz"], $_SESSION["qCorrect"]);
        $stmt->execute($data);
      }

      $sql = "SELECT results.*, quizusers.user 
              FROM results 
              INNER JOIN quizusers ON results.userId = quizusers.id 
              WHERE results.quizId = '$quizId' 
              ORDER BY results.correctAmount DESC";
      $stmt = $dbconn->prepare($sql);
  
      $data = array();  
      $stmt->execute($data);
      $output = "<table><caption>Resultat</caption><td>Spelare</td>".
      "<td>Antal rätt</td>";
      while ($res = $stmt->fetch(PDO::FETCH_ASSOC)) {
          $output .= "<tr>".
              "<td>".htmlentities($res['user'])."</td>".
              "<td>".htmlentities($res['correctAmount'])."</td>".
          "</tr>";
      }
  
      $output .= "</table>";
      echo $output;
      ?>
      <br><br>
      <h3>Dina svar</h3>
      <input type="radio" class="green" checked> = Rätt svar
      <input type="radio" class="red" checked> = Fel svar
      <?php
      $sql = "SELECT * FROM questions WHERE quizId='$quizId'";
      $stmt = $dbconn->prepare($sql);
      $stmt->execute();
      $questions = $stmt->fetchAll(PDO::FETCH_ASSOC);

      for ($u = 1; $u <= $_SESSION["qAmount"]; $u++){

        $question = $questions[$u - 1]; 
        $questionId = htmlentities($question["id"]);
        
          echo "<p>".htmlentities($question["question"])."</p>";
          $answers = array();
          $correct = array();

          $sql = "SELECT * FROM answers WHERE questionId='$questionId'";
          $stmt = $dbconn->prepare($sql);
  
          $data = array();
          $stmt->execute($data);

          while ($res = $stmt->fetch(PDO::FETCH_ASSOC)) {
            $answers[] = htmlentities($res["answer"]);
            $correct[] = htmlentities($res["correct"]);
          }
          ?>
          <input type="radio" id="1" value="1" <?php 
          if ($correct[0] == 1) {
            echo "class='green' checked";
          }
          elseif ($_SESSION["qAnswer".$u] == 1) {
            echo "class='red' checked";
          }?>>
          <label for="1"><?php echo $answers[0] ?></label><br><br>
          <input type="radio" id="1" value="2" <?php 
          if ($correct[1] == 1) {
            echo "class='green' checked";
          }
          elseif ($_SESSION["qAnswer".$u] == 2) {
            echo "class='red' checked";
          }?>>
          <label for="2"><?php echo $answers[1] ?></label><br><br>
          <input type="radio" id="1" value="0" <?php 
          if ($correct[2] == 1) {
            echo "class='green' checked";
          }
          elseif ($_SESSION["qAnswer".$u] == 0) {
            echo "class='red' checked";
          }?>>
          <label for="3"><?php echo $answers[2] ?></label><br><br>    
          <?php 
    }}
    else {
    
    ?>
    <p><?php
        global $questionId;
        $questionId = $_SESSION["question_id"][$_SESSION["question"]-1];
        $_SESSION["questionC"] = $questionId;
        $sql = "SELECT * FROM questions WHERE id='$questionId'";
        $stmt = $dbconn->prepare($sql);
        
        $stmt->execute();
        
        $res = $stmt->fetch(PDO::FETCH_ASSOC); echo htmlentities($res['question']);?></p>
    
    <?php 
        $sql = "SELECT * FROM answers WHERE questionId='$questionId'
                ORDER BY id ASC";
        $stmt = $dbconn->prepare($sql);
        
        $data = array();
        $stmt->execute($data);

        while ($res = $stmt->fetch(PDO::FETCH_ASSOC)) {
          $answers[] = htmlentities($res["answer"]);
        }
    ?>
   <input type="radio" id="1" value="1" name="question" required>
    <label for="1"><?php echo $answers[0] ?></label><br><br>
   <input type="radio" id="1" value="2" name="question">
    <label for="2"><?php echo $answers[1] ?></label><br><br>
   <input type="radio" id="1" value="0" name="question">
    <label for="3"><?php echo $answers[2] ?></label><br><br>

    <?php
    }
  }
  if (!isset($_SESSION["quiz"])) {
    ?>
    Välj quiz: 
    <select name="quizChoice">
      <?php
        $sql = "SELECT * FROM quiz";
        $stmt = $dbconn->prepare($sql);
  
        $stmt->execute();
  
        while ($res = $stmt->fetch(PDO::FETCH_ASSOC)) {
          ?>
          <option value="<?php echo htmlentities($res['id']);?>"><?php echo htmlentities($res['quizName']);?></option>
          <?php
        }
      ?>
    </select>
    <?php
  }
      
      if (!isset($_SESSION["quiz"]) || $_SESSION["question"] < $_SESSION["qAmount"]+1) {
    ?>
    <input type="submit" value="Nästa">

    <?php
    }
    ?>
</form>
<?php 

?>

</body>
</html>