PHP - Obtener el nombre de la imagen con class.upload.php

$handle = new \verot\Upload\Upload($_FILES['image_field']);

if ($handle->uploaded) {

  $handle->file_new_name_body   = 'image_resized';

  $handle->image_resize         = true;

  $handle->image_x              = 100;

  $handle->image_ratio_y        = true;

  $handle->process('/home/user/files/');

  if ($handle->processed) {

    echo 'image resized';

    $handle->clean();

  } else {

    echo 'error : ' . $handle->error;

  }

}