mirror of
https://github.com/smarty-php/smarty.git
synced 2025-11-03 22:01:36 +01:00
119 lines
3.5 KiB
XML
119 lines
3.5 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
|
|
<!-- $Revision$ -->
|
|
<sect1 id="language.function.eval">
|
|
<title>eval</title>
|
|
<informaltable frame="all">
|
|
<tgroup cols="5">
|
|
<colspec colname="param" align="center" />
|
|
<colspec colname="type" align="center" />
|
|
<colspec colname="required" align="center" />
|
|
<colspec colname="default" align="center" />
|
|
<colspec colname="desc" />
|
|
<thead>
|
|
<row>
|
|
<entry>Attribute Name</entry>
|
|
<entry>Type</entry>
|
|
<entry>Required</entry>
|
|
<entry>Default</entry>
|
|
<entry>Description</entry>
|
|
</row>
|
|
</thead>
|
|
<tbody>
|
|
<row>
|
|
<entry>var</entry>
|
|
<entry>mixed</entry>
|
|
<entry>Yes</entry>
|
|
<entry><emphasis>n/a</emphasis></entry>
|
|
<entry>variable (or string) to evaluate</entry>
|
|
</row>
|
|
<row>
|
|
<entry>assign</entry>
|
|
<entry>string</entry>
|
|
<entry>No</entry>
|
|
<entry><emphasis>n/a</emphasis></entry>
|
|
<entry>the template variable the output will be assigned
|
|
to</entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</informaltable>
|
|
<para>
|
|
eval is used to evaluate a variable as a template. This can be used
|
|
for things like embedding template tags/variables into variables or
|
|
tags/variables into config file variables.
|
|
</para>
|
|
<para>
|
|
If you supply the special "assign" attribute, the output of the
|
|
eval function will be assigned to this template variable instead of
|
|
being output to the template.
|
|
</para>
|
|
<note>
|
|
<title>Technical Note</title>
|
|
<para>
|
|
Evaluated variables are treated the same as templates. They follow
|
|
the same escapement and security features just as if they were
|
|
templates.
|
|
</para>
|
|
</note>
|
|
<note>
|
|
<title>Technical Note</title>
|
|
<para>
|
|
Evaluated variables are compiled on every invocation, the compiled
|
|
versions are not saved! However if you have caching enabled, the
|
|
output will be cached with the rest of the template.
|
|
</para>
|
|
</note>
|
|
<example>
|
|
<title>eval</title>
|
|
<programlisting>
|
|
setup.conf
|
|
----------
|
|
|
|
emphstart = <b>
|
|
emphend = </b>
|
|
title = Welcome to {$company}'s home page!
|
|
ErrorCity = You must supply a {#emphstart#}city{#emphend#}.
|
|
ErrorState = You must supply a {#emphstart#}state{#emphend#}.
|
|
|
|
|
|
index.tpl
|
|
---------
|
|
|
|
{config_load file="setup.conf"}
|
|
|
|
{eval var=$foo}
|
|
{eval var=#title#}
|
|
{eval var=#ErrorCity#}
|
|
{eval var=#ErrorState# assign="state_error"}
|
|
{$state_error}
|
|
|
|
OUTPUT:
|
|
|
|
This is the contents of foo.
|
|
Welcome to Foobar Pub & Grill's home page!
|
|
You must supply a <b>city</b>.
|
|
You must supply a <b>state</b>.
|
|
|
|
</programlisting>
|
|
</example>
|
|
</sect1>
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
indent-tabs-mode:nil
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"../../../../manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
vim600: syn=xml fen fdm=syntax fdl=2 si
|
|
vim: et tw=78 syn=sgml
|
|
vi: ts=1 sw=1
|
|
--> |