fput + no such file or directory

$file = "test.txt";

$ftp_server = "servename ";
$ftp_user_name = "username";
$ftp_user_pass = "password";
$destination_file = $file;


$source_file = "DOCUMENT_ROOT".$file;



// set up the FTP connection
$conn_id = ftp_connect("$ftp_server");

$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);

if ((!$conn_id) || (!$login_result)) {
        echo "FTP connection has failed!";
        echo "Attempted to connect to $ftp_server for user $ftp_user_name";
        
    } else {
        echo "Connected to $ftp_server, for user $ftp_user_name";
    }
 
   
  echo ftp_put($conn_id, $destination_file, $source_file, FTP_BINARY);
// upload the file
$upload = ftp_put($conn_id, $destination_file, $source_file, FTP_BINARY);

// check upload status
if (!$upload) {
        echo "FTP upload has failed!";
    } else {
        echo "Uploaded $source_file to $ftp_server as $destination_file";
    }
 
// close the FTP stream
ftp_close($conn_id);

PHP:

When i run this script i am getting the error message as "NO SUCH FILE OR DIRECTORY ".

Why i am getting this error ?
Please advice me.
Thanks in advance.

 

you haven't set $destination_file

 

you didnt put anything in the $destination_file

 

Even after provided the abosulte path of the destination server .I am getting the same Message.