มีปัญหากับคำสั่ง ftp_put Warning: ftp_put() expects at least 4 parameters, 2 given in

<?PHP
	include ("connects.php");
///////////////////ftp connect//////////////////////
$t_img = $_FILES['t_img'];

$datai = $_FILES['t_img']['name'];
$datau = "111.111.105.111/002/img/".$_FILES['t_img']['name'];

$ftp_server = "111.111.105.111"; 
$ftp_user_name = "002"; 
$ftp_user_pass = "002"; 
 

// set up basic connection 
$conn_id = ftp_connect($ftp_server);


// login with username and password 
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);
// check connection 
if ((!$conn_id) || (!$login_result))
{ 
	echo "FTP connection has failed!"; 
	echo "Attempted to connect to $ftp_server for user $ftp_user_name"; 
	exit; 
} else 
{ 
	echo "Connected to $ftp_server, for user $ftp_user_name"; 
	//ftp_mkdir($conn_id, $dir); 
} 


if (ftp_put($conn_id,$datai,$datau,FTP_BINARY))
{
    echo "<script>alert('Successfully');</script>";
} else 
{
    echo "There was a problem while upload $datai";
}


//////////////////////////////////////////////////////////
		
	
	//////////// close the FTP stream ///////////////////////
	ftp_close($conn_id);
	///////////////////////////////////
?>