file upload then insert into mysql

Hi, I have a questions about file uploading and inserting into mysql. As I know, when php upload a file, then it will store in the tmp directory. so we have to copy it into specific directory. like...if(!copy($userfile, "/hme/directory/$userfile_name") .....if it is not upload successfully, then {echo 'copy faild'} else { insert the values into the database}... the code should be written as if (!copy($userfile, "/home/directory/$userfile_name") {echo 'copy failed';} else {....insert some values into mysql...} I have a question for this, if the user terminate the upload process while uploading. Then, what will be happened. I mean which part of script will be exec?? Thank you Mark Lo