ok, thanks for your answer.
 
I read the code and i saw the GetValidatingFile function.
Does it mean that mine custom php file will be called after each file upload (3 call for an upload of 3 files) ?
 
 
Is there a way to access to an array (for example) of all the uploaded files after the completed upload of all the files ?
in this case my case, acces to all the files with one onely call to mine custom php file.
Thanx again