if($get_time) { $str = "SELECT MIN(e.time_start), MAX(e.time_end) FROM {$prefix}effort e WHERE e.id = " . intval($effort_ids[0]); $num = count($effort_ids); if($num > 1) { for($i = 1; $i < $num; $i++) { $str .= " OR e.id = " . intval($effort_ids[$i]); } } $str .= ";"; }