How can an admin area be created in PHP to allow users to change the background image of a website?

To create an admin area in PHP to allow users to change the background image of a website, you can start by creating a form in the admin area where users can upload an image file. Then, you can store the image file in a designated folder on the server and save the file path in a database table. Finally, in the front-end of the website, retrieve the file path from the database and use it as the background image using CSS. 

<?php
// Admin area form to upload background image
if(isset($_POST['submit'])) {
    $target_dir = "uploads/";
    $target_file = $target_dir . basename($_FILES["background_image"]["name"]);
    move_uploaded_file($_FILES["background_image"]["tmp_name"], $target_file);

    // Save file path in database
    $conn = new mysqli("localhost", "username", "password", "database");
    $sql = "UPDATE website_settings SET background_image = '$target_file' WHERE id = 1";
    $conn->query($sql);
}

// Front-end of the website
$conn = new mysqli("localhost", "username", "password", "database");
$sql = "SELECT background_image FROM website_settings WHERE id = 1";
$result = $conn->query($sql);
$row = $result->fetch_assoc();
?>

<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            background-image: url(<?php echo $row['background_image']; ?>);
        }
    </style>
</head>
<body>
    <!-- Content of the website -->
</body>
</html>

Keywords

PHP admin area background image website user input

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