What potential pitfalls should be considered when using the ftp_put function in PHP?

One potential pitfall when using the ftp_put function in PHP is that it may not handle errors gracefully, leading to potential security vulnerabilities or data loss. To mitigate this risk, you should always check the return value of the ftp_put function to ensure the file was successfully uploaded before proceeding.

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

// Upload file to FTP server
$local_file = "local_file.txt";
$remote_file = "remote_file.txt";
if (ftp_put($conn_id, $remote_file, $local_file, FTP_BINARY)) {
    echo "File uploaded successfully";
} else {
    echo "Failed to upload file";
}

// Close FTP connection
ftp_close($conn_id);