how to get the date of this Saturday all the time?

hi,php-general£¬ We have a meeting at every Saturday,I'd like to post the news and write the date of this Saturday every week,how can I get the date of Saturday. For example,today is Monday, and today is 2003-23-06,I'd like to get the Saturday date "2003-28-06" ;If today is Friday on "2003-16-08",I'd like to get the date of "2003-17-08",the date is a var got by a special function,How to WRITE THE FUNCTION? Any thoughts or suggestions would be greatly appreciated!Thanks in advance. ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡poetbox ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡phplist@enorth.com.cn ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡2003-06-25