What is the purpose of the PHP script for the guestbook?

The purpose of the PHP script for the guestbook is to allow users to leave comments or messages on a website. The script typically collects user input, stores it in a database, and displays the comments on the website for others 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);
}

// Retrieve comments from the database
$sql = "SELECT * FROM comments";
$result = $conn->query($sql);

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

$conn->close();
?>

Keywords

PHP script guestbook functionality form submission database integration

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