What are some best practices for creating a web calendar in PHP that allows for multiple users to input and view events?

To create a web calendar in PHP that allows for multiple users to input and view events, you can use a database to store event information and user permissions. Each user can have their own account with the ability to add, edit, and delete events. You can also implement a user interface that displays events based on the user's permissions.

// Sample PHP code for creating a web calendar with multiple users

// Connect to database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "calendar";

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

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

// Create table to store events
$sql = "CREATE TABLE events (
    id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    event_name VARCHAR(50) NOT NULL,
    event_date DATE,
    event_time TIME,
    user_id INT(6) NOT NULL
)";

if ($conn->query($sql) === TRUE) {
    echo "Table events created successfully";
} else {
    echo "Error creating table: " . $conn->error;
}

// Code for user authentication and permissions can be added here

// Code for displaying events based on user permissions can be added here

$conn->close();