thinkphp3.1 multi-File upload pictures and documents, how to save in different folders

thinkphp3.1 multi-File upload pictures and documents, how to save in different folders?
thinkphp3.1 upload pictures and documents, how to save separately?
------Solution--------------------
If you're willing to change the UploadFile.class.php file, there's still a turnaround.
Put the Getsavename method in the (near line 408)
$saveName = $rule (). ".". $filename [' extension '];
Change into
$saveName = $rule ($filename). ".". $filename [' extension '];

And then

$upload->savepath = ";
$upload->saverule = ' myFunction ';

Defining functions

function MyFunction ($filename) {
  $p = In_array ($filename [' extension '], array (' gif ', ' jpg ', ' png '))? ' Picture path ': ' Document path ';
  Return $p. $filename [' name '];
}

Since the suffix is added later, $filename [' name '] How to deform you feel free to

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