- $cond = "page_id BETWEEN $blockStart AND $blockEnd";
- $res = $db->select( 'page', array( 'page_id', 'page_namespace' ), $cond, __METHOD__ );
+ $cond = "page_id BETWEEN " . (int)$blockStart . " AND " . (int)$blockEnd;
+ $res = $db->select( 'page', [ 'page_id', 'page_namespace' ], $cond, __METHOD__ );