How can FTP transfer be integrated into PHP scripts for file manipulation?

To integrate FTP transfer into PHP scripts for file manipulation, you can use PHP's built-in FTP functions like ftp_connect, ftp_login, ftp_get, ftp_put, etc. These functions allow you to connect to an FTP server, authenticate, upload, and download files. By using these functions, you can easily transfer files between your PHP script and an FTP server.

// Connect to FTP server
$ftp_server = 'ftp.example.com';
$ftp_user = 'username';
$ftp_pass = 'password';
$ftp_connection = ftp_connect($ftp_server);
ftp_login($ftp_connection, $ftp_user, $ftp_pass);

// Download file from FTP server
$local_file = 'local_file.txt';
$remote_file = 'remote_file.txt';
ftp_get($ftp_connection, $local_file, $remote_file, FTP_BINARY);

// Upload file to FTP server
$local_file = 'local_file.txt';
$remote_file = 'remote_file.txt';
ftp_put($ftp_connection, $remote_file, $local_file, FTP_BINARY);

// Close FTP connection
ftp_close($ftp_connection);