Symfony HttpFoundation UploadedFile "not uploaded due to unknown error" when using Doctrin...

is_uploaded_file() returns always FALSE...

Multiple File upload isn't working, nor is is_upload_file...

Cannot upload file to server in PHP...

file upload mime type issue with UploadedFile...

file uploader PHP doesn't work, I don't know why...

PHP & jQuery file upload issues...

How to diagnose uploads failing only on OS X clients...