Picture disposition in thinkphp

Picture processing in thinkphp
foreach ($info as $file) {
$CC = $data [' img '] = $file [' Savename '];
Echo basename ('./uploads/42.jpg ', '. jpg ');

$image->open ('./uploads/ picture name . jpg ');
$image->thumb (->save) ('./uploads /Picture name . jpg ');
$User = M ("User");
$User->where ("id= ' {$AA} '")->save ($data);
$this->success (' Upload successful ', ' cc ');

I want to change the uploaded image, do not know what to write in the picture name position
------to solve the idea----------------------
Open the original, $file [' Savename ']
As for the thumbnail name, simply add a word in the back, or write a general function, according to the original name to generate a line

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