Are there any best practices for managing multiple domains in PHP?

When managing multiple domains in PHP, it is important to keep the code organized and maintainable. One best practice is to use a configuration file to store domain-specific settings and variables. This allows for easy updates and changes without having to modify code in multiple places. Additionally, using conditional statements based on the domain name can help streamline the logic for handling different domains. 

// Define domain-specific settings in a configuration file
$domains = [
    'domain1.com' => [
        'database_host' => 'localhost',
        'database_name' => 'domain1_db',
        'database_user' => 'domain1_user',
        'database_pass' => 'domain1_pass'
    ],
    'domain2.com' => [
        'database_host' => 'localhost',
        'database_name' => 'domain2_db',
        'database_user' => 'domain2_user',
        'database_pass' => 'domain2_pass'
    ]
];

// Get the current domain name
$current_domain = $_SERVER['HTTP_HOST'];

// Use domain-specific settings based on the current domain
if (array_key_exists($current_domain, $domains)) {
    $domain_settings = $domains[$current_domain];
    
    // Connect to the database using domain-specific settings
    $db_host = $domain_settings['database_host'];
    $db_name = $domain_settings['database_name'];
    $db_user = $domain_settings['database_user'];
    $db_pass = $domain_settings['database_pass'];
    
    $conn = new mysqli($db_host, $db_user, $db_pass, $db_name);
    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    }
} else {
    die("Domain not configured");
}

Keywords

domain management PHP multiple domains configuration virtual hosts

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