What best practices should be followed when using ftp functions in PHP?

When using FTP functions in PHP, it is important to follow best practices to ensure secure and efficient file transfers. Some key practices include validating user input, using secure connections (FTPS), setting appropriate permissions on files and directories, and handling errors properly. 

// Example of using FTP functions in PHP with best practices
$ftp_server = 'ftp.example.com';
$ftp_user = 'username';
$ftp_pass = 'password';

// Connect to FTP server securely
$conn_id = ftp_ssl_connect($ftp_server);

// Login to FTP server
$login_result = ftp_login($conn_id, $ftp_user, $ftp_pass);

// Check if login was successful
if ($login_result) {
    echo 'Connected and logged in to FTP server';
} else {
    echo 'Failed to connect or login to FTP server';
}

// Close FTP connection
ftp_close($conn_id);

Keywords

ftp functions PHP security file transfer error handling

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