I read about the S3 yeah, but I rather handle it in my own code without using a external service like Amazone in this case. I mean... I should be able to upload files no matter the size e.g. 1mb or 1gb. Its my server, and I want to be able to upload files (they contain explicit data from companies, therefore it may not be uploaded at a 3rd party or through the user of a service like amazone).
Looked at S3 but you need a creditcard and I dont have one so that aint an option. I read about the my hosting and they said I could add lines to my .htaccess file to manipulate the server. I tried that but still the same error, post size to large.