Are there any best practices for handling file paths and script names in PHP applications?

When working with file paths and script names in PHP applications, it is important to use built-in functions like `__DIR__` and `basename()` to ensure portability and security. By using these functions, you can avoid hardcoding file paths and script names, making your code more flexible and easier to maintain.

// Get the current directory path
$dir = __DIR__;

// Get the base name of the current script
$scriptName = basename(__FILE__);