php—Smarty-缓存2(26)
一个页面中,有些数据缓存,有些数据不缓存,就是局部缓存
l $smarty->assign(“var”, “value”, true)
第三个参数:表示是否不缓存
l {$var nocache=true}
在模板变量量后使用nocache参数
l {nocache}{/nocache}
使用一对nocache标记,之间的所有内容不缓存
缓存文件:我们发现姓名被直接写到文件中,年龄每次都需要动态读取,实现局部缓存功能
尝试将name和age的值修改,注意页面上发生的变量,name不变,age改变
七、 单页面多缓存
http://localhost/news.php?id=100
查看id为100的新闻
访问后,会对这个模板生成一个缓存文件,缓存的是id为100的新闻
http://localhost/news.php?id=80
查看id为80的新闻
这时,看到的将是之前的缓存文件
l $smarty->caching=true
开启缓存机制
l $smarty->display(“tpl”, “cacheid”)
第二个参数表示缓存ID,就是某个缓存文件的唯一标准
代码:
我们分别使用这样的url来访问:
Demo07.php?id=10
Demo07.php?id=83
Demo07.php?id=96
然后,发现在缓存目录下,产生这样几个缓存文件:
文件名^之前的内容就是缓存ID,是缓存文件的唯一标识。
清除缓存文件时该如何操作?
$smarty->clearCache(‘demo07.html’);
这样写,表示将demo07模板的所有的缓存文件清除
$smarty->clearCache(‘demo07.html’,83)
这样写,表示将demo07模板对应的ID为83的缓存文件删除
八、 缓存集合
http://localhost/news.php?kid=10&page=8
表示想查看新闻分类id为10的新闻标题,并显示第8页的数据,该如何进行缓存?
l $smarty->caching=true
开启缓存功能
l $smarty->display(“tpl”, $id1.”|”.$id2)
设置缓存ID,并使用 | 进行连接,表示是一个缓存集合
代码:
运行以下url:
Deo08.php?kid=13&page=2
Deo08.php?kid=25&page=8
Deo08.php?kid=2&page=58
发现,在缓存目录下,产生这样几个缓存文件
其实,就是指将得到的所有参数用 | 连接,生成新的缓存文件
MVC中应用Smarty
一、MVC
1、M:模型
2、 V:视图
3、 C:控制器
就是需要用Smarty替换我们之前的View组件

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