'feeds_tamper_timetodate_form', 'callback' => 'feeds_tamper_timetodate_callback', 'validate' => 'feeds_tamper_timetodate_validate', 'name' => 'Unix timestamp to Date', 'multi' => 'loop', 'category' => 'Date/time', ); function feeds_tamper_timetodate_form($importer, $element_key, $settings) { $form = array(); $form['date_format'] = array( '#type' => 'textfield', '#title' => t('Date format'), '#default_value' => isset($settings['date_format']) ? $settings['date_format'] : '', '#description' => t('A user-defined php date format string like "m-d-Y H:i". See the PHP manual for available options.', array('@url' => 'http://www.php.net/manual/function.date.php')), ); return $form; } function feeds_tamper_timetodate_validate(&$settings) { if (empty($settings['date_format'])) { form_set_error('settings][date_format', t('Please enter a valid date format string.')); } } function feeds_tamper_timetodate_callback($result, $item_key, $element_key, &$field, $settings, $source) { $field = date($settings['date_format'], $field); }