How to receive a File in Zend Framework 2 - php

Question

I am using ZF2.
I am sending a file via a HTML form not generated by Zend/Form. Now I am trying to get that file as i would normally do with $_FILES. I tried the below PHP code but all I get in the print_r is Array ( [upload] => bnk.csv )
How do I get all the metadata such as temp_dir of that file???.... I am new to Zend so dont know if I am forced to create the form with Zend/Form which seems silly since I only have a file upload field thats a lot easier to manage directly from the view.
$request = $this->getRequest();
if($request->isPost()){
$post= array_merge_recursive($request->getPost()->toArray(), $request->getFiles()->toArray());
print_r($post);
}
<form id="upload" method="post" action="bnk/upload/csv" enctype="multipart/form-data">
<label for="upload">Upload CSV File</label>
<input type="file" name="upload" />
<input type="submit"/>
</form>

Answer 1

/* upload */
$upload = new Zend_File_Transfer_Adapter_Http();
$upload->setDestination("folder for upload");
$upload->addValidator('Size',false, 1024 * 1024 * 5 ); //size limit
$upload->addValidator('Extension',false,'zip,rar'); //extension limit
$files = $upload->getFileInfo();
foreach($files as $file=>$info){
//if file is valid
if($upload->isValid($file)){
//confirm to upload
$upload->receive($file);
}
}
I use Zend_File_Transfer_Adapter_Http for uploading