PHP CRM_Core_BAO_OptionValue::find示例

 /**
  * Get next available value.
  * We will take the highest numeric value (or 0 if no numeric values exist)
  * and add one. The calling function is responsible for any
  * more complex decision making
  * @param array $params
  */
 public static function getDefaultValue($params)
 {
     $bao = new CRM_Core_BAO_OptionValue();
     $bao->option_group_id = $params['option_group_id'];
     if (isset($params['domain_id'])) {
         $bao->domain_id = $params['domain_id'];
     }
     $bao->selectAdd();
     $bao->whereAdd("value REGEXP '^[0-9]+\$'");
     $bao->selectAdd('(ROUND(COALESCE(MAX(CONVERT(value, UNSIGNED)),0)) +1) as nextvalue');
     $bao->find(TRUE);
     return $bao->nextvalue;
 }