how to tell if a returned returned query has results,

Hello, Apart from seeing the screen output, how can you test that the returned results from a query (mysql) does not have any rows, so you can inform inform the user with a friendly message, saying "... the search to not return any results".. Thanks D.T. ________________________________________________________________________ CONFIDENTIALITY This e-mail and any attachments are confidential and may also be privileged. If you are not the intended recipient(s) please note that any distribution, copying or use of this communication or the information in it is strictly prohibited.If you are not the named recipient(s), please notify the sender immediately and do not disclose the contents to another person, use it for any purpose, or store or copy the information in any medium. > ************