How can absolute path vs relative path usage affect PHP file inclusion and require statements?

When including or requiring files in PHP, using absolute paths can ensure that the correct file is included regardless of the current working directory. Relative paths, on the other hand, are dependent on the current working directory and can lead to errors if not specified correctly. To avoid issues with file inclusion, it is recommended to use absolute paths whenever possible.

// Using absolute path for file inclusion
require_once(__DIR__ . '/path/to/file.php');