// @todo switch to using api version
// $dupes = civicrm_api3('Contact', 'duplicatecheck', (array('match' => $params, 'dedupe_rule_id' => $dedupeRuleGroupID)));
// $ids = $dupes['count'] ? implode(',', array_keys($dupes['values'])) : NULL;
// @todo switch to using api version
// $dupes = civicrm_api3('Contact', 'duplicatecheck', (array('match' => $params, 'dedupe_rule_id' => $dedupeRuleGroupID)));
// $ids = $dupes['count'] ? implode(',', array_keys($dupes['values'])) : NULL;