Question

I wonder if someone can help spot the error for me. I’m pretty new to joining tables but I did well up to the last bit.

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ”(10,8)’ AND d.streamitem_target IN ‘(10,8)’) ORDER BY d.streamitem_id DE’ at line 9

$call="SELECT d.*, c.*, u.*
  FROM streamdata          AS d
  JOIN streamdata_comments AS c ON d.streamitem_id = c.comment_streamitem
  JOIN users               AS u ON u.id = c.comment_poster
 WHERE c.comment_poster = '$following_string'
   AND d.streamitem_id < '$lastID'
   AND (d.streamitem_target  = '$following_string' OR
       d.streamitem_creator = '$following_string')
   OR  d.streamitem_creator IN '$friendlist' 
   AND d.streamitem_target IN '$friendlist'
   ORDER BY d.streamitem_id DESC LIMIT 10";

Answer 1

OR  d.streamitem_creator IN '$friendlist' 

should be

 OR  d.streamitem_creator IN $friendlist

You do not quote IN variables.

The same applies to the AND d.streamitem_target IN '$friendlist' line.