MySQL输出到php echo

Question

I made this MySQL query to sum a column then i did echo $rake and i got the output : Resource id #13

It will be highly appreciated if anyone can assist me with this

<?php 
        $rake = mysql_query("select sum(value) as RakeSum from rakeitems");

        echo $rake;

?>

Did i forget something after the query? I am not very good at mysql so im unsure. Any help will be nice :) I have tried changing the query up.

And what does as do in the query, "as RakeSum" what does that mean?

Answer 1

Here $rake is a resource
give a look here to know how to use mysql_fetch_assoc to get data from a resource