$query="select a.*,b.cat_name,c.form_name,d.unit_name,m.medicine_usage_cat_name from tbl_items a left join tbl_categories b on b.cat_id=a.cat left join medicine_form c on c.form_id=a.item_form_id left join unit_master d on d.unit_id=a.unit_id left join medicine_usage_cat m on m.medicine_usage_cat_id = a.medicine_usage_cat_id where a.item_id = '".$itemId."'";