In my php code, I make for user for upload their files, to ftp. For several months, its work. No problem at all. But recently they said cannot upload their files, which is larger than 5MB. Previously, they can upload for 300MB or more. I ask my hosting, but they say that their network is OK. I tested my code on localhost, and it can upload even more than 1 GB data! Any ideas about that trouble?