* The folder exists, check for spellings
* Check the properties of the folder and make sure the permissions have read+write 0666
* Make sure the file is within your public html root, otherwise double check the owner of the file, and make sure PHP Has read / write access to it.
引用
Looks like it doesn't know where upload/ is. Make sure you have the full path in your statement. For example, if upload directory is actually located in /var/upload, then make sure that is in your statement, not just upload/.