Need help setting up a simple php uploader script

I am a beginner at this so pls someone help me figure out something. it may be nothing but here goes.

I am making a flash file uploader for my site and it needs a php script to actually upload the file to server. the code is as follows:

<body><?php
if ($_FILES[‘Filedata’][‘name’]) {
move_uploaded_file($_FILES[‘Filedata’][‘tmp_name’], ‘upload_directory/’ . basename($_FILES[‘Filedata’][‘name’]));
}
?>

will this work or do i need to change some vaues in the code such as the folder which the file goes into etc?