What are the best practices for managing subdomains in a PHP-based project management system?

When managing subdomains in a PHP-based project management system, it is important to ensure proper routing and handling of requests for different subdomains. One common approach is to use a wildcard subdomain setup in your web server configuration and then parse the subdomain in your PHP code to determine the appropriate actions to take.

// Example code to handle subdomains in PHP

$subdomain = explode('.', $_SERVER['HTTP_HOST'])[0];

switch ($subdomain) {
    case 'admin':
        // Handle requests for the admin subdomain
        break;
    case 'client':
        // Handle requests for the client subdomain
        break;
    default:
        // Handle requests for the main domain or any other subdomains
        break;
}