FTP mkdir功能

failed to open stream: No such file or directory in .I have tried all possible paths!

$name=$_POST['name'];
$name=strtolower($name);
if (is_dir("./Abhishek/Project/events/$name"))
{

echo 'Event Already Present';
}
else
{
 mkdir("./Abhishek/Project/events/$name"); 
 include './upload/fileupload1.php';
 echo "Event Successfully Created";

} ?>

i have uploaded all my files on FTP. ON Local host every thin works fine As usual but when i tried on live server,FTP directory did not create..do i have to use ftp_mkdir? i have never used it .