What are the best practices for handling file inclusions in PHP to avoid errors like the one mentioned in the forum thread?

The best practice for handling file inclusions in PHP to avoid errors like the one mentioned in the forum thread is to use absolute paths instead of relative paths when including files. This ensures that the included files are always found in the correct location regardless of the current working directory.

// Incorrect way using relative path
include 'config.php';

// Correct way using absolute path
include __DIR__ . '/config.php';