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87 lines
2.8 KiB
XML
87 lines
2.8 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision$ -->
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<sect1 id="language.syntax.variables">
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<title>Variables</title>
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<para>
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Template variables start with the $dollar sign. They can contain numbers,
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letters and underscores, much like a
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<ulink url="&url.php-manual;language.variables">PHP variable</ulink>.
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You can reference arrays
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by index numerically or non-numerically. Also reference
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object properties and methods.</para>
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<para>
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<link linkend="language.config.variables">Config file variables</link>
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are an exception to the $dollar syntax
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and are instead referenced with surrounding #hashmarks#, or
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via the
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<link linkend="language.variables.smarty.config">
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<parameter>$smarty.config</parameter></link> variable.
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</para>
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<example>
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<title>Variables</title>
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<programlisting>
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<![CDATA[
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{$foo} <-- displaying a simple variable (non array/object)
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{$foo[4]} <-- display the 5th element of a zero-indexed array
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{$foo.bar} <-- display the "bar" key value of an array, similar to PHP $foo['bar']
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{$foo.$bar} <-- display variable key value of an array, similar to PHP $foo[$bar]
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{$foo->bar} <-- display the object property "bar"
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{$foo->bar()} <-- display the return value of object method "bar"
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{#foo#} <-- display the config file variable "foo"
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{$smarty.config.foo} <-- synonym for {#foo#}
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{$foo[bar]} <-- syntax only valid in a section loop, see {section}
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{assign var=foo value='baa'}{$foo} <-- displays "baa", see {assign}
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Many other combinations are allowed
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{$foo.bar.baz}
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{$foo.$bar.$baz}
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{$foo[4].baz}
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{$foo[4].$baz}
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{$foo.bar.baz[4]}
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{$foo->bar($baz,2,$bar)} <-- passing parameters
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{"foo"} <-- static values are allowed
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{* display the server variable "SERVER_NAME" ($_SERVER['SERVER_NAME'])*}
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{$smarty.server.SERVER_NAME}
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]]>
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</programlisting>
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</example>
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<para>Request variables such as <literal>$_GET</literal>,
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<literal>$_SESSION</literal>, etc are available via the
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reserved <link linkend="language.variables.smarty">
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<parameter>$smarty</parameter></link> variable.
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</para>
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<para>
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See also <link linkend="language.variables.smarty">
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<parameter>$smarty</parameter></link>,
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<link linkend="language.config.variables">config variables</link>
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<link linkend="language.function.assign"><varname>{assign}</varname></link>
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and
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<link linkend="api.assign"><varname>assign()</varname></link>.
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</para>
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</sect1>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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