How can the use of INI files improve the security and organization of configuration settings in PHP?

Using INI files can improve the security and organization of configuration settings in PHP by storing sensitive information like database credentials outside of the web root directory, making it inaccessible to external users. Additionally, INI files allow for easy management and centralization of configuration settings, reducing the likelihood of errors and inconsistencies in the code.

// Load configuration settings from an INI file
$config = parse_ini_file('config.ini');

// Accessing database credentials from the loaded configuration
$db_host = $config['db_host'];
$db_user = $config['db_user'];
$db_pass = $config['db_pass'];
$db_name = $config['db_name'];

// Connect to the database using the retrieved credentials
$connection = new mysqli($db_host, $db_user, $db_pass, $db_name);