how to upload any file in magento

Step 1 :- cretae html form for upload file

Upload File

                     

Step 2 :- Write Script for upload file

<?php

if(isset($_FILES['myfilename']['name']) && $_FILES['myfilename']['name'] != '')
{  
try
    {      
        $path = Mage::getBaseDir('media') . DS . 'csvfile' . DS;  //desitnation directory    
        $fname = $_FILES['myfilename']['name']; //file name
  $filpath = $path.$fname;
        $uploader = new Varien_File_Uploader('myfilename'); //load class
        $uploader->setAllowedExtensions(array('xls','xlsx','csv')); //Allowed extension for file
        $uploader->setAllowCreateFolders(true); //for creating the directory if not exists
        $uploader->setAllowRenameFiles(false); //if true, uploaded file's name will be changed, if file with the same name already exists directory.
        $uploader->setFilesDispersion(false);
        $uploader->save($path,$fname); //save the file on the specified path
    }
    catch (Exception $e)
    {
        echo 'Error Message: '.$e->getMessage();
    }
}
?>