How can the use of relative paths in PHP directory navigation improve code readability and maintainability?

Using relative paths in PHP directory navigation can improve code readability and maintainability by making the code more portable and easier to understand. Relative paths are based on the current working directory, so they can be easily moved or shared without breaking the code. This can make it simpler to locate and update file paths in the future, leading to more maintainable code.

// Example of using relative paths in PHP directory navigation
$currentDirectory = getcwd();
$filePath = $currentDirectory . '/includes/config.php';
include $filePath;