Free Programming Source Codes and Computer Programming Tutorials: Quiz Randomizer in PHP and MySQL

A simple quiz randomizer that I wrote using PHP and MySQL I hope you will find it useful.

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Program Listing

index.php

<?php

// index.php

// Prof. Jake Rodriguez Pomperada, MAED-IT, MIT

// www.jakerpomperada.blogspot.com and www.jakerpomperada.com

// jakerpomperada@gmail.com

// Bacolod City, Negros Occidental

// include database connection

include "connection.php";

$stmt = $con->prepare("SELECT * FROM `data` ORDER BY RAND()");

$stmt->execute();

$res = $stmt->get_result();

$links = $slides = $options = $choices = "";

if ($res->num_rows > 0) {

$num = 0;

while ($row = $res->fetch_assoc()) {

$num++;

$links .= '<a href="#slide-'.$num.'">'.$num.'</a>';

$con1 = [1,2,3,4];

shuffle($con1);

for ($i=1; $i <= 4; $i++) {

$choice = "choice_".$con1[$i-1];

($i == 1)? $required="required":"";

$options .= '

<span>'.wordwrap($row[$choice], 25, "<br />\n").'</span>

</label>';

}

$slides .= '

<table>

<tr>

<div class="titleblock">Question #'.$num.'</div>

<textarea name="txtQuestion'.$row["id"].'" rows="5" placeholder="Enter question #'.$row["id"].' here..." disabled required>'.$row["question"].'</textarea>

</td>

</tr>

<tr>

'.$options.'

</div>

</td>

</tr>

</table>

</div>

$options = $choices = "";

}

} else {

header("Location: questions.php");

}

$con->close();

<!DOCTYPE html>

<head>

<title>Quiz | Quiz Randomizer in PHP MySQL</title>

<style>

.titleblock,

table th div,

button,

.slider .links>a {

background: #2196f3!important;

}

</style>

</head>

<body>

<main>

<h1>Quiz Randomizer in PHP MySQL</h1>

<h2>» Jake R. Pomperada, MAED-IT, MIT «</h2>

<br>

<hr>

<hr>

</div>

<?php echo $links; ?>

</div>

<?php echo $slides; ?>

</div>

<button type="submit" name="btnSubmit" class="btnSubmit">Submit</button>

</div>

</form>

</main>

</body>

</html>

connection.php

<?php

// Prof. Jake Rodriguez Pomperada, MAED-IT, MIT

// www.jakerpomperada.blogspot.com and www.jakerpomperada.com

// jakerpomperada@gmail.com

// Bacolod City, Negros Occidental

// Enable error reporting for mysqli

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);

// Hostname

$host = "localhost";

// Username

$user = "root";

// Password

$pass = "";

// Database Name

$db = "r_questions";

// Establish database connection

$con = new mysqli($host, $user, $pass, $db);

if ($con->connect_error) {

die("Connection failed: " . $con->connect_error);

}

questions.php

<?php

// Prof. Jake Rodriguez Pomperada, MAED-IT, MIT

// www.jakerpomperada.blogspot.com and www.jakerpomperada.com

// jakerpomperada@gmail.com

// Bacolod City, Negros Occidental

// include database connection

include "connection.php";

$message = "";

if(isset($_POST["btnSubmit"])) {

for ($i=1; $i < 5; $i++) {

$qn = "txtQuestion".$i;

$c1 = "txtChoice".$i."1";

$c2 = "txtChoice".$i."2";

$c3 = "txtChoice".$i."3";

$c4 = "txtChoice".$i."4";

$ans = "txtAnswer".$i;

$stmt_check = $con->prepare("SELECT `id` FROM `data` WHERE `id`=?");

$stmt_check->bind_param("i", $i);

$stmt_check->execute();

$stmt_check->store_result();

if($stmt_check->num_rows > 0) {

$stmt = $con->prepare("UPDATE `data` SET `question`=?,`choice_1`=?,`choice_2`=?,`choice_3`=?,`choice_4`=?,`answer`=? WHERE `id`=?");

$stmt->bind_param("sssssii", $_POST[$qn], $_POST[$c1], $_POST[$c2], $_POST[$c3], $_POST[$c4], $_POST[$ans], $i);

$message = '<div class="message update">Record Successfully Updated</div>';

} else {

$stmt = $con->prepare("INSERT INTO `data`(`question`, `choice_1`, `choice_2`, `choice_3`, `choice_4`, `answer`) VALUES (?,?,?,?,?,?)");

$stmt->bind_param("sssssi", $_POST[$qn], $_POST[$c1], $_POST[$c2], $_POST[$c3], $_POST[$c4], $_POST[$ans]);

$message = '<div class="message save">Record Successfully Saved</div>';

}

$stmt->execute();

$stmt->close();

}

$stmt = $con->prepare("SELECT * FROM `data`");

$stmt->execute();

$res = $stmt->get_result();

$links = $slides = $options = $choices = "";

if ($res->num_rows > 0) {

while ($row = $res->fetch_assoc()) {

for ($i=1; $i <= 4; $i++) {

$i == $row["answer"]? $selected ="selected": $selected = "";

$options .= '<option value="'.$i.'" '.$selected.'>Choice #'.$i.'</option>';

$choice = "choice_".$i;

$choices .= '<tr>

<th><div>Choice #'.$i.':</div></th>

</tr>';

}

$links .= '<a href="#slide-'.$row["id"].'">'.$row["id"].'</a>';

$slides .= '

<table>

<tr>

<div class="titleblock">Question #'.$row["id"].'</div>

<textarea name="txtQuestion'.$row["id"].'" rows="5" placeholder="Enter question #'.$row["id"].' here..." required>'.$row["question"].'</textarea>

</td>

</tr>

'.$choices.'

<tr>

<th><div>Answer:</div></th>

<td>

'.$options.'

</select>

</td>

</tr>

</table>

</div>

$options = $choices = "";

}

} else {

$message = '<div class="message error"><b>ERROR:</b> No Questions to display. Please add some questions first.</div>';

for ($reps=1; $reps < 5; $reps++) {

$links .= '<a href="#slide-'.$reps.'">'.$reps.'</a>';

for ($i=1; $i <= 4; $i++) {

$options .= '<option value="'.$i.'">Choice #'.$i.'</option>';

$choice = "choice_".$i;

$choices .= '<tr>

<th><div>Choice #'.$i.':</div></th>

</tr>';

}

$slides .= '

<table>

<tr>

<div class="titleblock">Question #'.$reps.'</div>

</td>

</tr>

'.$choices.'

<tr>

<th><div>Answer:</div></th>

<td>

<option value="" selected disabled>~ Select Answer ~</option>

'.$options.'

</select>

</td>

</tr>

</table>

</div>

$options = $choices = "";

}

$con->close();

<!DOCTYPE html>

<head>

<title>Questions | Quiz Randomizer in PHP MySQL</title>

</head>

<body>

<?php echo $message; ?>

<main>

<h1>Quiz Randomizer in PHP MySQL</h1>

<h2>» Jake R. Pomperada, MAED-IT, MIT «</h2>

<br>

<hr>

<h3>Questions</h3>

<hr>

</div>

<?php echo $links; ?>

</div>

<?php echo $slides; ?>

</div>

<button type="submit" name="btnSubmit" class="btnHalf btnSubmit">Save Entries</button>

</div>

</form>

</main>

</body>

</html>

result.php

<?php

// Prof. Jake Rodriguez Pomperada, MAED-IT, MIT

// www.jakerpomperada.blogspot.com and www.jakerpomperada.com

// jakerpomperada@gmail.com

// Bacolod City, Negros Occidental

// include database connection

include "connection.php";

$key = [];

$num = 0;

if(isset($_POST["btnSubmit"])) {

for ($i=1; $i < 5; $i++) {

$stmt = $con->prepare("SELECT * FROM `data` WHERE `id`=?");

$stmt->bind_param("i", $_POST["qid".$i]);

$stmt->execute();

$res = $stmt->get_result();

while ($row = $res->fetch_assoc()){

for ($x=1; $x < 5; $x++) {

if ($_POST["answer".$i] == $row["choice_".$x]) {

($row["answer"] == $x)? $num++:"";

}

$stmt->close();

}

$con->close();

<!DOCTYPE html>

<head>

<title>Result | Quiz Randomizer in PHP MySQL</title>

</head>

<body>

<main>

<h1>Quiz Randomizer in PHP MySQL</h1>

<h2>» Jake R. Pomperada, MAED-IT, MIT «</h2>

<br>

<hr>

<h3>Result</h3>

<hr>

<h1 class="txtScore">Score: <?php echo ($num*25)."%"; ?></h1>

<a href="questions.php" class="btnHalf btnSubmit">Back to Questions</a>

<a href="index.php" class="btnHalf btnQuiz">Take the Quiz Again?</a>

</div>

</main>

</body>

</html>

style.css

@import url('https://fonts.googleapis.com/css?family=Poppins:400,500,600,700&display=swap');

:root {

--width: 400px;

--height: auto;

--maincolor: #ED4264;

}

* {

box-sizing: border-box;

margin: 0;

padding: 0;

}

html,

body {

height: 100%;

text-align: center;

}

body {

background: #fff;

font-family: 'Poppins', sans-serif;

min-height: 100vh;

overflow-x: hidden;

}

main {

padding: 100px 0;

display: flex;

align-items: center;

justify-content: center;

}

.title {

display: block;

margin: 0 0 30px;

text-align: center;

color: #000;

}

h1 {

font-size: 25px;

line-height: 25px;

text-transform: uppercase;

margin: 0 0 5px 0;

}

h2 {

font-size: 20px;

margin: 0 0 10px 0;

}

.slider {

width: var(--width);

text-align: center;

overflow: hidden;

display: block;

margin: 0 auto;

}

.slider>.links {

position: absolute;

left: calc(50% - 242px);

align-items: center;

z-index: 9999;

}

.slider .links>a {

background: var(--maincolor);

text-align: center;

text-decoration: none;

display: block;

padding: 20px 15px;

color: #fff;

margin-bottom: 2px;

}

.slider .links>a:focus {

background: #000;

}

.slides {

display: flex;

overflow-x: hidden;

scroll-snap-type: x mandatory;

scroll-behavior: smooth;

-webkit-overflow-scrolling: touch;

}

.slides>div {

scroll-snap-align: start;

flex-shrink: 0;

width: var(--width);

height: var(--height);

margin-right: 50px;

background: #eee;

transform-origin: center center;

transform: scale(1);

transition: transform 0.5s;

position: relative;

display: flex;

justify-content: center;

align-items: center;

/* font-size: 100px; */

padding: 30px;

}

.titleblock {

display: block;

width: 100%;

text-align: center;

padding: 20px;

color: #f1f1f1;

text-transform: uppercase;

}

table th {

vertical-align: top;

}

table th div {

display: block;

text-transform: uppercase;

color: #f1f1f1;

text-align: center;

padding: 10px;

}

table td {

white-space: nowrap;

}

textarea,

select,

input {

font-family: 'Poppins', sans-serif;

display: block;

background: #e1e1e1;

width: 100%;

padding: 10px;

border: none;

font-size: 15px;

resize: none;

}

input:hover,

input:focus,

select:hover,

select:focus,

textarea:hover,

textarea:focus {

background: #dbdbdb;

}

textarea,

input {

margin-bottom: 5px;

}

.btnWrapper {

display: inline-flex;

}

.btnblock {

display: flex;

}

.txtScore {

margin: 80px 0;

font-size: 50px;

line-height: 1.2;

}

.btnQuiz,

.btnSubmit,

button {

font-family: 'Poppins', sans-serif;

color: #fff;

padding: 15px;

opacity: 0.9;

outline: none;

font-size: 20px;

text-transform: uppercase;

border: none;

text-align: center;

cursor: pointer;

text-decoration: none;

display: block;

margin: 2px 0 0;

}

.btnSubmit {

width: var(--width);

}

.btnQuiz,

.btnSubmit,

button:hover {

opacity: 1;

}

.titleblock,

table th div,

.btnSubmit,

.btnQuiz,

button {

background: var(--maincolor);

font-weight: bold;

font-size: 15px;

}

.btnWrapper {

display: flex;

padding: 0;

margin: 0;

}

.btnHalf {

width: 50%;

}

.btnQuiz {

background: #2196f3;

}

.wrapper {

background: #fff;

width: 300px;

border-radius: 5px;

padding: 10px;

display: block;

}

.wrapper .option {

background: #fff;

width: 100%;

border-radius: 5px;

cursor: pointer;

border: 2px solid lightgrey;

transition: all 0.3s ease;

margin-bottom: 5px;

display: block;

text-align: left;

display: flex;

align-items: center;

}

.wrapper .option:last-child {

margin-bottom: 0;

}

input[type="radio"] {

display: inline-block;

height: 14px;

width: 14px;

margin: 0 10px;

padding: 0;

}

.wrapper .option span {

display: inline-block;

font-size: 18px;

color: #808080;

width: calc(100% - 32px);

white-space: nowrap;

}

.message {

position: fixed;

top: 20px;

left: calc(50% - 200px);

width: 400px;

padding: 20px;

text-align: center;

-webkit-animation: cssAnimation 0s ease-in 4s forwards;

animation: cssAnimation 0s ease-in 4s forwards;

-webkit-animation-fill-mode: forwards;

animation-fill-mode: forwards;

color: #fff;

}

@keyframes cssAnimation {

to {

width:0;

height:0;

overflow:hidden;

padding: 0;

}

@-webkit-keyframes cssAnimation {

to {

width:0;

height:0;

visibility:hidden;

padding: 0;

}

.message.update {

background: #ffc107;

color: #000;

}

.message.save {

background: #4caf50;

}

.message.error {

background: #f44336;

}

r_questions.sql

-- phpMyAdmin SQL Dump

-- version 5.0.3

-- https://www.phpmyadmin.net/

-- Host: 127.0.0.1

-- Generation Time: Sep 11, 2021 at 11:44 PM

-- Server version: 10.4.14-MariaDB

-- PHP Version: 7.4.11

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";

START TRANSACTION;

SET time_zone = "+00:00";

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;

/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;

/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;

/*!40101 SET NAMES utf8mb4 */;

-- Database: `r_questions`

-- --------------------------------------------------------

-- Table structure for table `data`

CREATE TABLE `data` (

`id` int(11) NOT NULL,

`question` varchar(500) NOT NULL,

`choice_1` text NOT NULL,

`choice_2` text NOT NULL,

`choice_3` text NOT NULL,

`choice_4` text NOT NULL,

`answer` int(11) NOT NULL

) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Dumping data for table `data`

INSERT INTO `data` (`id`, `question`, `choice_1`, `choice_2`, `choice_3`, `choice_4`, `answer`) VALUES

(1, '1 + 1 = ?', '2', '3', '4', '5', 1),

(2, '2+2=?', '6', '8', '10', '4', 4),

(3, 'Highest Mountain in the World.', 'Mt. Carmel', 'Mt. Liza', 'Mt. Everest', 'Mt. John', 3),

(4, 'Latest version of Microsoft Windows?', 'Window XP', 'Windows 10', 'Windows 11', 'Windows 95', 3);

-- Indexes for dumped tables

-- Indexes for table `data`

ALTER TABLE `data`

ADD PRIMARY KEY (`id`);

-- AUTO_INCREMENT for dumped tables

-- AUTO_INCREMENT for table `data`

ALTER TABLE `data`

MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=5;

COMMIT;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;

/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;

/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

DOWNLOAD THE COMPLETE SOURCE CODE HERE

Free Programming Source Codes and Computer Programming Tutorials

Sunday, September 12, 2021

Quiz Randomizer in PHP and MySQL

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