What are some best practices for managing global functions in PHP to ensure efficient and effective code organization?

Global functions in PHP can lead to code clutter and potential naming conflicts. To manage global functions efficiently, consider organizing them into classes or namespaces to encapsulate related functions together. This helps improve code organization and reduces the risk of naming conflicts. Additionally, using autoloaders can help load functions only when needed, improving performance.

// Example of organizing global functions into a class
class MathFunctions {
    public static function add($a, $b) {
        return $a + $b;
    }

    public static function subtract($a, $b) {
        return $a - $b;
    }
}

// Usage
echo MathFunctions::add(5, 3); // Output: 8
echo MathFunctions::subtract(5, 3); // Output: 2