parse errors

[AN-net]

whats wrong? im getting parse expecting t_variable or $ for line 400


398: if($do=="showsearchresults"){
399: $artname="artist_name='$artistname'";
400: $fresults= $DB_site->query("SELECT * FROM gallery WHERE gallery_id='$gallery',image_name='$imgname'".iif($artistname=="",$artname, )." $orderby $orderin");
401: //$numresults= $DB_site->num_rows($fresults);
402: //if($numresults==0){

[Xenon]

, )."

there should be ' around the