How does the process of enabling FTP differ between Unix and Windows systems in PHP?

Enabling FTP on Unix systems typically involves installing the necessary FTP server software, such as vsftpd, and configuring it to allow FTP connections. On Windows systems, enabling FTP usually involves enabling the FTP server feature in the Windows Features settings.

// Enable FTP on Unix systems
// Install vsftpd (if not already installed)
// Configure vsftpd to allow FTP connections

// Enable FTP on Windows systems
// Go to Control Panel -> Programs -> Turn Windows features on or off
// Check the FTP server feature and click OK to enable it