如何在PDO中正确计算查询

Question

I am trying to dynamically load more posts into my system

This is my code...

$stmt = "
  SELECT * FROM `acmPosting` 
  WHERE (`sender`='$thisID' AND `postType`='a')
  OR (`recip`='$thisID' AND `sender`='$userID' AND `postType`='a')
  OR (`sender` IN ($friendsArray) AND `recip`='$thisID'  AND `postType`='a')
  ORDER BY `timeSent` DESC LIMIT $startlimit,10";

    if($stmtCount = $conn->query($stmt)){
        if($stmtCount->fetchColumn() > 0){
            $result = acmPosts($conn, $site, $userID, $stmt);
            $jsonArray['a'] = $result;
            $jsonArray['b'] = 'go';             
        }else{
            $jsonArray['a'] = '<div class="thisOutput" style="padding:12px;">There are no more posts</div>';
            $jsonArray['b'] = 'stop';
        }
    }

Everything works fine until it gets to the last set of posts AKA if the LIMIT is 100,10 but there are 105 posts in the call it won't call any to the fetchColumn().

I hope this question makes sense. Thanks in advance for any help you can give.

EDIT

How can I determine when I have reached the LIMIT and act accordingly

Answer 1

Your description is not very precise but maybe this is what you are looking for:

http://dev.mysql.com/doc/refman/5.0/en/information-functions.html#function_found-rows