What are the limitations of writing to a public calendar in Outlook using PHP?

When writing to a public calendar in Outlook using PHP, one limitation is that you may need to have the necessary permissions to access and modify the calendar. Additionally, you may need to authenticate your PHP script with the Outlook API using OAuth 2.0. It is also important to ensure that your PHP script is properly handling any errors that may occur during the writing process.

// Example PHP code snippet for writing to a public calendar in Outlook

// Set up authentication with Outlook API using OAuth 2.0
// Make sure to replace 'client_id', 'client_secret', 'redirect_uri', and 'tenant_id' with your own values
$oauth_settings = [
    'client_id' => 'YOUR_CLIENT_ID',
    'client_secret' => 'YOUR_CLIENT_SECRET',
    'redirect_uri' => 'YOUR_REDIRECT_URI',
    'tenant_id' => 'YOUR_TENANT_ID'
];

// Code to write to the public calendar in Outlook
// Make sure to replace 'calendar_id' with the ID of the public calendar
// and handle any errors that may occur during the writing process