zend framework2 - Rackspace saving file in text formats -


using zend framework 2 , saving files cloud using "zendservice-rackspace", here code saving file. code saving file in text format when go link show text format, not image or pdf format of file

$filename =  $filename.'_'.date('ymd-his').".".$fileext;         $filedata = file_get_contents($file['tmp_name']);         $rackspace = new files($user,$key);         if ($rackspace->authenticate()) {             $rackspace->storeobject('photos', $filename, $filedata);             if ($rackspace->issuccessful()) {                 $cdninfo = $rackspace->getinfocdncontainer($module);                 $url = $cdninfo['cdn_uri_ssl'] . '/' . $filename;                 return $url;             } else{                 echo json_encode(array(                     'success'=>true,                     'msg'=>'file uploading failed server'));                 exit;             }


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