You have a PHP script and you are getting an error when trying to upload a file to an FTP server. How would you troubleshoot this issue?

To troubleshoot an error when uploading a file to an FTP server using PHP, you can check the error message returned by the FTP function. Many FTP functions return false or specific error codes to indicate an error. By checking the return value of the FTP function, you can identify the error and take appropriate actions, such as displaying an error message or logging the error details. Additionally, reviewing the function usage and ensuring the FTP server is properly configured can help troubleshoot the issue. By following these steps, you can identify and resolve the error encountered during file uploads to an FTP server in your PHP script.