How can PHP be used to create a guestbook functionality on a website?

To create a guestbook functionality on a website using PHP, you can set up a form for users to submit their comments and then store these comments in a database. You can then retrieve and display these comments on the website for other users to see. 

<?php
// Connect to the database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "guestbook";

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Handle form submission
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST['name'];
    $comment = $_POST['comment'];

    // Insert data into database
    $sql = "INSERT INTO comments (name, comment) VALUES ('$name', '$comment')";
    $conn->query($sql);
}

// Retrieve comments from database
$sql = "SELECT name, comment FROM comments";
$result = $conn->query($sql);

// Display comments
if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "Name: " . $row["name"]. " - Comment: " . $row["comment"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();
?>

Keywords

PHP guestbook functionality website create

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