if ( ! function_exists( 'wp_handle_upload' ) )
require_once( ABSPATH . 'wp-admin/includes/file.php' );

$uploadedfile = $_FILES['resume'];
$upload_overrides = array( 'test_form' => false );
$movefile = wp_handle_upload( $uploadedfile, $upload_overrides );
if ( $movefile ) {
   echo $movefile['url'];
   echo 'Success';
}else{
   echo 'Fail';
}