php—Smarty-7(24),phpsmarty-724
php—Smarty-7(24),phpsmarty-724
三、 方法
l assign :为模板分配变量
l assignByRef :为模板分配变量 (按引用传递)
Display和fetch的区别:
四、 过滤器
过滤器就是用于过滤数据
1、过滤器的种类:
1)预过滤器 Prefilters
2)后过滤器 Postfilters
3)输出过滤器 Output Filters
根据触发时间的不同,划分出以上三种过滤器
2、工作流程
tpl源文件 =〉Prefilter =〉编译tpl文件 => Postfilter =>保存到磁盘=> 编译过的php文件执行=〉Output Filters(=〉如果有smarty cache的话,Output Filters的内容会缓存) =>结果输出。
3、注册过滤器
在Smarty中,过滤器在使用之前必须注册
在2.6中,注册过滤器
l Prefilters
$smarty->register_prefilter(“func”);
l Postfilters
$smarty->register_postfilter(“func”);
l Output Filters
$smarty->register_outputfilter(“func”);
注册不同的过滤器调用不同的方法。
3.0中,注册过滤器
$smarty->registerFilter($type, $callback);
$type:过滤器类型
取值范围:
Pre:预过滤器
Post:后过滤器
Output :输出过滤器
$callback:过滤器函数
4、代码:
预过滤和后过滤器第一次编译时会执行,或者模板发生改变后会再次执行
输出过滤器每次都会执行

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