Question

So I have a mysql table which has a id column (sid) that can be dynamically added to. Now I am doing a query to get count of all entries grouped into each of these sid’s like so:

SELECT SUM(IF(sid = 71, 1, 0)) as count71,
SUM(IF(sid = 72, 1, 0)) as count72,
SUM(IF(sid = 75, 1, 0)) as count75,
SUM(IF(sid = 81, 1, 0)) as count85
FROM `table`
WHERE userid=44;

Note that all the SUM fields are created dynamically and I don’t know what the actual sid’s are. Now question is how do I loop through the resultset for each of the counts using PHP’s variable variables? I’ve tried this but doesn’t work.

$count_var = "rs['count71']"
$$count_var // holds number of entries where sid is 71;

Thanks!

Answer 1

May I suggest this instead:

select sid, count(*) from `table` where userid = 44 group by sid ;