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�置过滤器

模�的�置过滤器是当模�被编译�时执行的PHP函数。 �置过滤器�以通过注册过滤器�调用, 或者放置到�件目录中,用 loadFilter()函数或者 设置 $autoload_filters�调用。 Smarty把编译�的代�作为第一个�数传递到函数中,并期待函数返回�过处�的代�。

Example 17.12. 使用�置过滤器


<?php
// 在PHP程�中
function add_header_comment($tpl_source, Smarty_Internal_Template $template)
{
    return "<?php echo \"<!-- Created by Smarty! -->\n\"; ?>\n".$tpl_source;
}

// 注册�置过滤器
$smarty->registerFilter('post','add_header_comment');
$smarty->display('index.tpl');
?>

  

上�的�置过滤器把编译�的index.tpl的代���这样:


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

  

�� registerFilter(), �置过滤器, 输出过滤器, 和 loadFilter().

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