What factors can cause differences in file inclusion behavior between localhost and a server environment?

Differences in file inclusion behavior between localhost and a server environment can be caused by differences in file paths, server configurations, and PHP settings. To ensure consistent file inclusion behavior, it is important to use absolute paths when including files and to check for any server-specific settings that may affect file inclusion.

// Use absolute paths for file inclusions to ensure consistency
include_once($_SERVER['DOCUMENT_ROOT'] . '/path/to/file.php');