What are common pitfalls when transferring PHP code from a local environment to an online server?

One common pitfall when transferring PHP code from a local environment to an online server is file path discrepancies. Make sure to update file paths in your code to match the directory structure of the online server. Additionally, ensure that the necessary PHP extensions are enabled on the server to avoid any compatibility issues.

// Example of updating file paths in PHP code
$local_path = '/path/to/local/file.php';
$online_path = '/path/to/online/file.php';
include_once($online_path);