Mysql_free_result() doubt

Hi to all, I am little bit confused to use the mysql_free_result($result) function.because i searched google - they told dont use this function to php 4.X and also it says clearly "When you are done with a result set, you must free the memory it uses by calling mysql_free_result()". I mean something like when to use or not to use it? I already know that only SELECT queries that retrieve rows require to free resources, but maybe when all data is retrieved the resources are free automatically or we need to call mysql_free_result() to free the memory. and also this function will free only one row at a time or all the rows of the result set . A.suresh --------------------------------- Find out what India is talking about on - Yahoo! Answers India Send FREE SMS to your friend's mobile from Yahoo! Messenger Version 8. Get it NOW