[TYPO3] weird $_FILES array ...

[Pierre Rouwens]

Hi there,

I have here something weird, when i use a form to post files outside 
TYPO3 the $_FILES array is as always, but i use the same form in a 
plugin the $_FILES array is different, is this a normal behaviour ??
I can't figure out how TYPO3 can modify this...
outside TYPO3:
$_FILES['upload']['tmp_name']
inside TYPO3:
$_FILES['tmp_name']['upload']


 From the api what is the best way to check mime types and manage 
uploaded files ?

Thanks a lot in advance

Pierre