Are there any existing PHP libraries or frameworks that can assist in creating a calendar with day, week, and month views?

To create a calendar with day, week, and month views in PHP, you can utilize existing libraries or frameworks such as FullCalendar, PHP-Calendar, or Laravel FullCalendar. These libraries provide functionalities to easily display events in different views and navigate between days, weeks, and months.

// Example using FullCalendar library
// Include FullCalendar library
require 'vendor/autoload.php';

// Initialize FullCalendar
$calendar = new \FullCalendar\Calendar();

// Set options for the calendar
$calendar->setOptions([
    'defaultView' => 'dayGridMonth',
    'header' => [
        'left' => 'prev,next today',
        'center' => 'title',
        'right' => 'dayGridMonth,timeGridWeek,timeGridDay'
    ],
    'events' => [
        // Add events data here
    ]
]);

// Render the calendar
echo $calendar->generate();