-- Function that checks whether a username is already being used
function doesUsernameExist ( username )
    if ( querySingle( "SELECT * FROM accounts WHERE username=? LIMIT 1", username ) ) then
        return true
    else
        return false
    end
end

-- Function that checks if the username and password are matching
function checkLogin ( username, password )
    if ( querySingle( "SELECT * FROM accounts WHERE username=? AND password=? LIMIT 1", username, md5( username ) ) ) then
        return true
    else
        return false
    end
end

-- Function that creates a new account
function createAccount ( username, password, email )
    if ( exec( "INSERT INTO accounts SET username=?, password=?, email=?", username, md5( username ), email ) ) then
        return true
    else
        return false
    end
end

-- Function that removed a account
function deleteAccount ( username )
    if ( exec( "DELETE FROM accounts WHERE username=?", username ) ) then
        return true
    else
        return false
    end
end