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templateExists() — 检查模板是否存在

说明

bool templateExists(string template);

检查的模板可以指定文件路径,或者一个模板资源。

Example 14.48. templateExists()

下面例子使用$_GET['page']{include}指定的模板。 如果模板不存在,则会显示一个“page not found”的错误信息。 首先是page_container.tpl的模板内容:


<html>
<head><title>{$title}</title></head>
<body>
{include file='page_top.tpl'}

{* 包含中间内容的模板 *}
{include file=$content_template}

{include file='page_footer.tpl'}
</body>

  

然后在PHP脚本中:


<?php

// 设置文件名,如 index.inc.tpl
$mid_template = $_GET['page'].'.inc.tpl';

if( !$smarty->templateExists($mid_template) ){
    $mid_template = 'page_not_found.tpl';
}
$smarty->assign('content_template', $mid_template);

$smarty->display('page_container.tpl');

?>

  

参见 display(), fetch(), {include}{insert}

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