Hey,
I tried the code with more than one sensor and found out it won´t work this way. So i rewrote a big part of the code, and now i have 5 sensors up and running.
Means: the first code is useless for more than one sensor, but on my page there´s the new code and also the improved PHP-script.
Just wanted to inform everybody here 
Have fun! I really would appreciate improvements to the code and especially to the PHP (make it safe against sql-injections etc.)
And please tell me if you used my code for other projects. I really would like to see that i contributed something to the whole open-source thingie
@bld: yeah, heard about pachube. I´ll try it out , but for the moment i´m very happy with my system. I dont want to be bound to an online-service and i really like what i´ve learned about linux and server-technology while building it for myself.
Greetings,
Jan