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What is the best practice for hosting multiple domain names on the same server using PHP?

When hosting multiple domain names on the same server using PHP, the best practice is to use virtual hosts in your web server configuration and then use the $_SERVER['HTTP_HOST'] variable in your PHP code to determine which domain is being accessed. This allows you to serve different content based on the domain name.

php 
$domain = $_SERVER['HTTP_HOST'];

switch ($domain) {
    case 'domain1.com':
        // Code for domain1.com
        break;
    case 'domain2.com':
        // Code for domain2.com
        break;
    default:
        // Default code
        break;
}

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