Hello jsutton , thanks for your help.
Im using php and phpmyadmin also.
Its a long time im searching for a way to let the players upload an image mostly to use it to leaderboard.
Yesterday i realised that its better to just send a file(picture) in a folder to the server with the uniqe id of the player and retreive it with the url/unigeid.png instead of overload the database with real pictures.
Im make some test and i send a file to the server but its empty, i will try to send the binary.getbase64 to see the results.