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smarty/docs/en/programmers/api-functions/api-is-cached.xml
2004-04-13 11:47:32 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
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<sect1 id="api.is.cached">
<title>is_cached</title>
<funcsynopsis>
<funcprototype>
<funcdef>boolean <function>is_cached</function></funcdef>
<paramdef>string <parameter>template</parameter></paramdef>
<paramdef>[string <parameter>cache_id</parameter>]</paramdef>
</funcprototype>
</funcsynopsis>
<para>
This returns true if there is a valid cache for this template.
This only works if <link
linkend="variable.caching">caching</link> is set to true.
</para>
<example>
<title>is_cached</title>
<programlisting role="php">
<![CDATA[
<?php
$smarty->caching = true;
if(!$smarty->is_cached("index.tpl")) {
// do database calls, assign vars here
}
$smarty->display("index.tpl");
?>
]]>
</programlisting>
</example>
<para>
You can also pass a cache id as an optional second parameter
in case you want multiple caches for the given template.
</para>
<example>
<title>is_cached with multiple-cache template</title>
<programlisting role="php">
<![CDATA[
<?php
$smarty->caching = true;
if(!$smarty->is_cached("index.tpl","FrontPage")) {
// do database calls, assign vars here
}
$smarty->display("index.tpl","FrontPage");
?>
]]>
</programlisting>
</example>
</sect1>
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