What are some best practices for organizing and programming header files in PHP?

When organizing and programming header files in PHP, it is important to keep them clean and structured for better readability and maintainability. One common best practice is to separate the header content into smaller, reusable files, such as config.php for configuration settings, functions.php for reusable functions, and styles.php for CSS styles. This helps in keeping the code modular and easier to manage. 

// config.php
define('DB_HOST', 'localhost');
define('DB_USER', 'root');
define('DB_PASS', 'password');
define('DB_NAME', 'database');

// functions.php
function calculateSum($num1, $num2) {
    return $num1 + $num2;
}

// styles.php
echo '<link rel="stylesheet" type="text/css" href="styles.css">';

Keywords

include require namespaces autoloading dependency injection

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