++	+˵+

rows		ÿҳʾ¼
offset		ƫֵһҳΪ0ڶҳΪ2*rows,ҳΪ3*rows..
keyword		ѯؼ
searchby	ʲô1⣬2ݣ0ȫģ⣫ݣ	
sortby		1ʱ2ض
beforafter	ʱƣҪͬʱdaysֵ),1=days֮ڣ2daysǰ
days		ãͨbeforaferʹ
categoryid	ĿID
table		Ҫı
searchandor     ؼʱǡ򡱻ǡ롱