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HomeBackend DevelopmentPHP TutorialSmarty局部缓存的几种方法简介_PHP

很多时候我们在用smarty时,并不希望缓存整个页面,例如天气、股票等这类即时更新的信息。那么我们可以让其不缓存,常见的实现有如下3种方法:

1.insert 法:

Insert 函数类似于 inluce 函数,不同之处是 insert 所包含的内容不会被缓存,每次调用该模板都会重新执行该函数。比如说我们定义一个显示时间的函数:

复制代码 代码如下:
function insert_get_current_time() {
return date("H:i:s");
}
//然后在模板中:
{insert name="get_current_time"} 

这样每次打开页面,显示的都是即时时间,而不是缓存的。注意这里的函数名一定要以insert开头,模板中的name与之对应。如果我们的函数包含一些参数,那么我们的在模板中可以这样:

复制代码 代码如下:
{insert name="get_current_time" lid=#banner_location_id# sid=#site_id#}
//那么Smarty 调用该函数类似insert_get_current_time(array("lid"=>"12345","sid"=>67890"));

并将返回的结果显示在调用的位置。

2.动态block 法:

在smarty代码中:

复制代码 代码如下:
function smarty_block_nocache($param,$content,$smarty)   
{
return $content;
}
$smarty->register_block('nocache','smarty_block_nocache',false);

在模板文件中:

复制代码 代码如下:
    //这里放不需要被缓存的内容

3.插件block法:

 这个跟block差不多,只是我们将其以插件的形式来做。在Smarty/plugins目录下建一个文件:block.nocache.php,这里命名一定要规范,否则smarty识别不了。 内容如下:

复制代码 代码如下:
function smarty_block_nocache($param,$content,$smarty)
{
return $content;

在模板中和上面一直,不需要被缓存的地方加上nocache就可以了!

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