[TYPO3-english] how to develop extension?

[François Suter]

Hi,

> Then I discovered a warning from extension manager, saying that there are
> differences between installed and recent version.
>
> So I wonder, what is the recommended way to develop extension?
> ... and is there a tool available, to create those t3x-files?

This is not related to the T3X files, it's related to information found 
at the bottom of the ext_emconf.php file (the 
"_md5_values_when_last_written" information). This contains hashes for 
all files in the extension. So it's only normal that - as you develop 
your extension - those values should not match anymore.

When you upload your extension to the TER, the hashes are calculated 
again and you get a clean ext_emconf.php file again (and no warnings 
anymore in the EM).

You can also manually force a re-calculation of those hashes, by 
clicking on your extension in the EM and then choosing "Backup/delete" 
from the drop-down menu at the top. In the screen that gets displayed 
then, you have an option called "Update EM_CONF". Click on the link and 
that should do the job.

HTH

-- 

Francois Suter
Cobweb Development Sarl - http://www.cobweb.ch