gistfile1.php

<?php
/**
 * @usage
 * 1. Save this file to your computer.
 * 
 * 2. Navigate to console.gigya.com and click "export users" http://take.ms/2b6Ff
 * 
 * 3. This will download a spreadsheet of gigya users.  Open the spread sheet 
 *    and make note of the range of user IDs.
 * 
 * 4. Adjust the values on line 22 below to encompass the range of users you 
 *    wish to delete.  For instance, if you wish to delete users 75 through 100,
 *    set $i = 75; $i < 100
 * 
 * 5. Invoke this file with `drush @radius.local scr /absolute/path/to/this/file.php`
 * 
 */

/**
 * This will delete users 1 through 30 from the gigya database.
 */
for ($i = 1; $i < 30; $i++) {
  $gigya = new GigyaUser($i);
  $gigya->deleteAccount();
}