What are the best practices for managing configuration data in a complex modular system in PHP?

When managing configuration data in a complex modular system in PHP, it is important to keep the configuration separate from the code to allow for easy modification and maintenance. One way to achieve this is by using a configuration file or database to store all the necessary settings. Additionally, utilizing constants or a configuration class can help centralize and organize the configuration data for easy access and modification. 

// config.php

define('DB_HOST', 'localhost');
define('DB_USER', 'username');
define('DB_PASS', 'password');
define('DB_NAME', 'database');

// Or using a configuration class

class Config {
    public static $dbHost = 'localhost';
    public static $dbUser = 'username';
    public static $dbPass = 'password';
    public static $dbName = 'database';
}

Keywords

modular system configuration data PHP best practices libraries

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