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editquestion.php
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<?php session_start(); ?>
<?php include "connection.php";
if (isset($_SESSION['admin'])) {
?>
<?php
if (isset($_GET['qno'])) {
$qno = mysqli_real_escape_string($conn , $_GET['qno']);
if (is_numeric($qno)) {
$query = "SELECT * FROM questions WHERE qno = '$qno' ";
$run = mysqli_query($conn, $query) or die(mysqli_error($conn));
if (mysqli_num_rows($run) > 0) {
while ($row = mysqli_fetch_array($run)) {
$qno = $row['qno'];
$question = $row['question'];
$ans1 = $row['ans1'];
$ans2 = $row['ans2'];
$ans3 = $row['ans3'];
$ans4 = $row['ans4'];
$correct_answer = $row['correct_answer'];
}
}
else {
echo "<script> alert('error');
window.location.href = 'allquestions.php'; </script>" ;
}
}
else {
header("location: allquestions.php");
}
}
?>
<?php
if(isset($_POST['submit'])) {
$question =htmlentities(mysqli_real_escape_string($conn , $_POST['question']));
$choice1 = htmlentities(mysqli_real_escape_string($conn , $_POST['choice1']));
$choice2 = htmlentities(mysqli_real_escape_string($conn , $_POST['choice2']));
$choice3 = htmlentities(mysqli_real_escape_string($conn , $_POST['choice3']));
$choice4 = htmlentities(mysqli_real_escape_string($conn , $_POST['choice4']));
$correct_answer = mysqli_real_escape_string($conn , $_POST['answer']);
$query = "UPDATE questions SET question = '$question' , ans1 = '$choice1' , ans2= '$choice2' , ans3 = '$choice3' , ans4 = '$choice4' , correct_answer = '$correct_answer' WHERE qno = '$qno' ";
$run = mysqli_query($conn , $query) or die(mysqli_error($conn));
if (mysqli_affected_rows($conn) > 0 ) {
echo "<script>alert('Question successfully updated');
window.location.href= 'allquestions.php'; </script> " ;
}
else {
"<script>alert('error, try again!'); </script> " ;
}
}
?>
<!DOCTYPE html>
<html>
<head>
<title>PHP-Kuiz</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<header>
<div class="container">
<h1>PHP-Kuiz</h1>
<a href="index.php" class="start">Home</a>
<a href="add.php" class="start">Add Question</a>
<a href="allquestions.php" class="start">All Questions</a>
<a href="exit.php" class="start">Logout</a>
</div>
</header>
<main>
<div class="container">
<h2>Add a question...</h2>
<form method="post" action="">
<p>
<label>Question</label>
<input type="text" name="question" required="" value="<?php echo $question; ?>">
</p>
<p>
<label>Choice #1</label>
<input type="text" name="choice1" required="" value="<?php echo $ans1; ?>">
</p>
<p>
<label>Choice #2</label>
<input type="text" name="choice2" required="" value="<?php echo $ans2; ?>">
</p>
<p>
<label>Choice #3</label>
<input type="text" name="choice3" required="" value="<?php echo $ans3; ?>">
</p>
<p>
<label>Choice #4</label>
<input type="text" name="choice4" required="" value="<?php echo $ans4; ?>">
</p>
<p>
<label>Correct answer</label>
<select name="answer" >
<option value="a">Choice #1 </option>
<option value="b">Choice #2</option>
<option value="c">Choice #3</option>
<option value="d">Choice #4</option>
</select>
</p>
<p>
<input type="submit" name="submit" value="Submit">
</p>
</form>
</div>
</main>
</body>
</html>
<?php }
else {
header("location: admin.php");
}
?>