How can subdomains be configured in PHP hosting environments for optimal performance?

Subdomains can be configured in PHP hosting environments for optimal performance by setting up separate virtual hosts for each subdomain. This allows for better organization of the website's content and can improve loading times by distributing the server's resources more efficiently.

<VirtualHost *:80>
    ServerName subdomain.example.com
    DocumentRoot /var/www/subdomain
</VirtualHost>