Question

测验的结果未存储到数据库的“结果”

我尝试存储我的

$ _ session ['score']

在变量中

 $score = $_session['score']

但没有任何反应以下是我所有的测验文件

index.php （这是用户选择测验时看到的第一页。此页工作正常）

<?php include "database.php"; ?>

<?php
    //Get the total questions
    $query="select * from questions";
    //Get Results
    $results = $mysqli->query($query) or die ($mysqli->error.__LINE__);
    $total = $results->num_rows;

 ?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
      <?php include "nav-bar.php" ?>
    <title>Quizzer!</title>
    <link rel="stylesheet" href="style.css" type="text/css" />

  </head>
  <body>
    <div id="container">
      <header>
        <div class="container">
          <br>
          <br>
          <br>
          <h1>LaBoa weekly quiz</h1>
    </div>
      </header>


      <main>
      <div class="container">
        <br>
        <h2>Test your knowlege</h2>
        <br>
    <p>This is a multiple choice quize to test your knowledge about something</p>
    <ul>
        <li><strong>Number of Questions: </strong><?php echo $total; ?></ul>
        <li><strong>Type: </strong>Multiple Choice</ul>
        <li><strong>Estimated Time: </strong><?php echo $total*0.5; ?> minutes</ul>
    </ul>
    <a href="question.php?n=1" class="start">Start Quiz</a>
      </div>
    </div>
    </main>


    <footer>
      <div class="container">
           Copyright &copy; 2019, LaBoa
      </div>
    </footer>
  </body>
</html>

process.php （此文件是我创建$ _SESSION ['score']的位置。它汇总了用户正确输入的所有答案。

<?php include 'database.php'; ?>
<?php session_start(); ?>
<?php

      //Check to see if score is set_error_handler
    if (!isset($_SESSION['score'])){
       $_SESSION['score'] = 0;
    }

//Check if form was submitted
if($_POST){
    $number = $_POST['number'];
    $selected_choice = $_POST['choice'];
    $next=$number+1;
    $total=4;

    //Get total number of questions
    $query="SELECT * FROM `questions`";
    $results = $mysqli->query($query) or die($mysqli->error.__LINE__);
    $total=$results->num_rows;

    //Get correct choice
    $q = "select * from `choices` where question_number = $number and is_correct=1";
    $result = $mysqli->query($q) or die($mysqli->error.__LINE__);
    $row = $result->fetch_assoc();
    $correct_choice=$row['id'];



    //compare answer with result
    if($correct_choice == $selected_choice){
        $_SESSION['score']++;
    }

    if($number == $total){
           $score = $_POST['score'];
        header("Location: final.php");
        exit();
    } else {
            header("Location: question.php?n=".$next."&score=".$_SESSION['score']);
    }
}
?>

final.php（这里是测验结果的支付地。尽管显示了结果，但并没有保存到thr数据库中）

 <?php include "database.php"; ?>
<?php session_start(); ?>
<?php
    //Create Select Query
 ?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
      <?php include "nav-bar.php" ?>
    <title>
      Quizzer!</title>
    <link rel="stylesheet" href="style.css" type="text/css" />
  </head>
  <body>
    <div id="container">
      <header>
        <div class="container">
          <br>
          <br>
          <br>
          <h1>LaBoa Weekly Quiz</h1>
    </div>

      </header>


      <main>
    <div class="container">
         <h2>You are Done!</h2>
         <p>Congrats! You have completed the test</p>
         <p>Final socre: <?php echo $_SESSION['score']; ?></p>
         <a href="question.php?n=1" class="start">Take Test Again</a>
       <?php
       $query="INSERT into results (account_id, score, score_date)
       values('name', 'score', date)";
       ?>
         <?php session_destroy(); ?>
    </div>
      </main>


    <footer>
      <div class="container">
           Copyright &copy; 2019, LaBoa
      </div>
    </footer>
  </body>
</html>

这是我的测验的sql

-- Table structure for table `questions`
--

CREATE TABLE `questions` (
  `question_number` int(11) NOT NULL,
  `question` text COLLATE utf16_bin NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf16 COLLATE=utf16_bin;

--

-- Table structure for table `results`
--

CREATE TABLE `results` (
  `result_id` int(11) NOT NULL,
  `account_id` int(11) NOT NULL,
  `score` int(11) NOT NULL,
  `score_date` date NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

CREATE TABLE `users` (
  `id` int(11) NOT NULL,
  `firstname` varchar(50) NOT NULL,
  `lastname` varchar(50) NOT NULL,
  `username` varchar(50) NOT NULL,
  `password` varchar(255) NOT NULL,
  `email` varchar(100) NOT NULL,
  `img` text NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

测验应该是学校项目中较大应用程序的一部分。我还将在下面链接有关该用户的文件，因为它们可能会有所帮助。

register.php

<?php
// Change this to your connection info.
$DB_HOST = 'localhost';
$DB_USER = 'root';
$DB_PASS = '';
$DB_NAME = 'phplogin';
// Try and connect using the info above.
$mysqli = new mysqli($DB_HOST, $DB_USER, $DB_PASS, $DB_NAME);
if ($mysqli->connect_errno) {
    // If there is an error with the connection, stop the script and display the error.
    die ('Failed to connect to MySQL: ' . $mysqli->connect_errno);
}
// Now we check if the data was submitted, isset will check if the data exists.
if  (!isset($_POST['firstname'], $_POST['lastname'], $_POST['username'], $_POST['password'], $_POST['email'])) {
    // Could not get the data that should have been sent.
    die ('Please complete the registration form!<br><a href="register.html">Back</a>');
}
// Make sure the submitted registration values are not empty.
if (empty($_POST['firstname']) || empty($_POST['lastname']) || empty($_POST['username']) || empty($_POST['password']) || empty($_POST['email'])) {
    // One or more values are empty...
    die ('Please complete the registration form!<br><a href="register.html">Back</a>');
}
// We need to check if the st_account with that username exists
if (!filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) {
    die ('Email is not valid!<br><a href="register.html">Back</a>');
  if (preg_match('/[A-Za-z0-9]+/', $_POST['username']) == 0) {
    die ('Username is not valid!<br><a href="register.html">Back</a>');
}
if (strlen($_POST['password']) > 20 || strlen($_POST['password']) < 5) {
    die ('Password must be between 5 and 20 characters long.<br><a href="register.html">Back</a>');
}
}
if ($stmt = $mysqli->prepare('SELECT id, password FROM users WHERE username = ?')) {
    // Bind parameters (s = string, i = int, b = blob, etc), hash the password using the PHP password_hash function.
    $stmt->bind_param('s', $_POST['username']);
    $stmt->execute();
    $stmt->store_result();
    // Store the result so we can check if the st_account exists in the database.
    if ($stmt->num_rows > 0) {
        // Username already exists
        echo 'Username exists, please choose another!<br><a href="register.html">Back</a>';
    } else {
        // Username doesnt exists, insert new st_account
        if ($stmt = $mysqli->prepare('INSERT INTO users (firstname, lastname, username, password, email) VALUES (?, ?, ?, ?, ?)')) {
            // We do not want to expose passwords in our database, so hash the password and use password_verify when a user logs in.
            $password = password_hash($_POST['password'], PASSWORD_DEFAULT);
            $stmt->bind_param('sssss', $_POST['firstname'], $_POST['lastname'], $_POST['username'], $password, $_POST['email']);
            $stmt->execute();
            echo 'You have successfully registered, you can now login!<br><a href="index.html">Login</a>';
        } else {
            echo 'Could not prepare statement!';
        }
    }
    $stmt->close();
} else {
    echo 'Could not prepare statement!';
}
$mysqli->close();
?>

authenticate.php

<?php
session_start();
// Change this to your connection info.
$DB_HOST = 'localhost';
$DB_USER = 'root';
$DB_PASS = '';
$DB_NAME = 'phplogin';
// Try and connect using the info above.
$con = mysqli_connect($DB_HOST, $DB_USER, $DB_PASS, $DB_NAME);
if ( mysqli_connect_errno() ) {
    // If there is an error with the connection, stop the script and display the error.
    die ('Failed to connect to MySQL: ' . mysqli_connect_error());
}
// Now we check if the data was submitted, isset will check if the data exists.
if ( !isset($_POST['username'], $_POST['password']) ) {
    // Could not get the data that should have been sent.
    die ('Username and/or password does not exist!');
}
// Prepare our SQL
if ($stmt = $con->prepare('SELECT id, password FROM users WHERE username = ?')) {
    // Bind parameters (s = string, i = int, b = blob, etc), hash the password using the PHP password_hash function.
    $stmt->bind_param('s', $_POST['username']);
    $stmt->execute();
    $stmt->store_result();
    // Store the result so we can check if the st_account exists in the database.
    if ($stmt->num_rows > 0) {
        $stmt->bind_result($id, $password);
        $stmt->fetch();
        // st_account exists, now we verify the password.
        if (password_verify($_POST['password'], $password)) {
            // Verification success! User has loggedin!
            $_SESSION['loggedin'] = TRUE;
            $_SESSION['name'] = $_POST['username'];
            $_SESSION['id'] = $id;
            include_once 'homepage.php';
            // echo 'Welcome ' . $_SESSION['name'] . '!';
        } else {
            echo 'Incorrect username and/or password!';
        }
    } else {
        echo 'Incorrect username and/or password!';
    }
    $stmt->close();
} else {
    echo 'Could not prepare statement!';
}
?>

home.php

<?php
// check to see if the user is logged in
if ($_SESSION['loggedin']) {
    // user is logged in
    include_once 'homepage.php';
} else {
    // user is not logged in, send the user to the login page
    header('Location: index.html');
}
?>

对不起，如果我发布的信息太多或太少，我真的很绝望，多年来一直困扰于这个问题，我真的不知道该怎么办。请不要在我仍在学习的评论中惹恼我。

final.php的代码

 <?php include "database.php"; ?>
<?php session_start(); ?>
<?php
    //Create Select Query
 ?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
      <?php include "nav-bar.php" ?>
    <title>
      Quizzer!</title>
    <link rel="stylesheet" href="style.css" type="text/css" />
  </head>
  <body>
    <div id="container">
      <header>
        <div class="container">
          <br>
          <br>
          <br>
          <h1>LaBoa Weekly Quiz</h1>
    </div>

      </header>


      <main>
    <div class="container">
         <h2>You are Done!</h2>
         <p>Congrats! You have completed the test</p>
         <p>Final socre: <?php echo $_SESSION['score']; ?></p>
         <a href="question.php?n=1" class="start">Take Test Again</a>
       <?php
       $con->query("INSERT into results (account_id, score, score_date)
              values($name, $score, now())");
       ?>
         <?php session_destroy(); ?>
    </div>
      </main>


    <footer>
      <div class="container">
           Copyright &copy; 2019, LaBoa
      </div>
    </footer>
  </body>
</html>

Answer 1

我确定这是否有帮助，在final.php中，您有一个查询，但是我看不到查询的执行位置，并且应该对值进行硬编码吗？

 $query="INSERT into results (account_id, score, score_date)
       values('name', 'score', date)";

应该是这样的：

查看结果表，您需要在查询result_id，account_id，score和score_date中提供以下值

更新结果表，使result_id自动增加

$accountId = $_SESSION['id'];
$score = $_SESSION['score'];
$scoreDate = date('Y-m-d H:i:s');
$con->query("INSERT into results (account_id, score, score_date)
       values($accountId , $score, $scoreDate )");

Answer 2

看起来您刚刚分配了变量$query，而从未执行过它。在您的 final.php 文件中查看这一行。

<?php
       $query="INSERT into results (account_id, score, score_date)
       values('name', 'score', date)";
       ?>
         <?php session_destroy(); ?>

这是PHP的最后一行，因此您从未使用$query变量做任何事情。

我无法将测验的结果存储在数据库中

2 个答案: