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Postfilters

后过滤器

Template postfilters are PHP functions that your templates are ran through after they are compiled. Postfilters can be either registered or loaded from the plugins directory by using load_filter() function or by setting $autoload_filters variable. Smarty will pass the compiled template code as the first argument, and expect the function to return the result of the processing.

模板后过滤器是一些PHP函数,模板就是在那些函数编译后才运行。后过滤器同样能够通过 load filter() 函数和设置 $autoload filters 变量来注册或者从工具目录里载入。SMARTY将传递模板输出作为第一个参数,通过自定义函数返回处理结果。

 

Example 15-3. using a template postfilter

<?php
// put this in your application
function add_header_comment($tpl_source, &$smarty)
{
 return "<?php echo \"<!-- Created by Smarty! -->\n\" ?>\n".$tpl_source;
}

// register the postfilter
$smarty->register_postfilter("add_header_comment");
$smarty->display("index.tpl");
?>

{* compiled Smarty template index.tpl *}
<!-- Created by Smarty! -->
{* rest of template content... *}
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