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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<reference xml:id="class.variant" role="class" xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude">
<titleabbrev>variant</titleabbrev>
<title>variant class</title>
<partintro>
<!-- {{{ variant intro -->
<section xml:id="variant.intro">
&reftitle.intro;
<para>
The VARIANT is COM's equivalent of the PHP zval; it is a structure that
can contain a value with a range of different possible types. The variant
class provided by the COM extension allows you to have more control over
the way that PHP passes values to and from COM.
</para>
</section>
<!-- }}} -->
<section xml:id="variant.synopsis">
&reftitle.classsynopsis;
<!-- {{{ Synopsis -->
<classsynopsis class="class">
<ooclass>
<classname>variant</classname>
</ooclass>
<classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.variant')/db:refentry/db:refsect1[@role='description']/descendant::db:constructorsynopsis[@role='variant'])">
<xi:fallback/>
</xi:include>
</classsynopsis>
<!-- }}} -->
</section>
<section xml:id="class.variant.examples">
<title>variant examples</title>
<para>
<example xml:id="com.variant.example.php5">
<title>variant example</title>
<programlisting role="php">
<![CDATA[
<?php
$v = new variant(42);
print "The type is " . variant_get_type($v) . "<br/>";
print "The value is " . $v . "<br/>";
?>
]]>
</programlisting>
</example>
</para>
<note>
<para>
When returning
a value or fetching a variant property, the variant is converted to a PHP
value only when there is a direct mapping between the types that would
not result in a loss of information. In all other cases, the result is
returned as an instance of the variant class. You can force PHP to
convert or evaluate the variant as a PHP native type by using a casting
operator explicitly, or implicitly casting to a string by
<function>print</function>ing it. You may use the wide range of variant
functions to perform arithmetic operations on variants without forcing a
conversion or risking a loss of data.
</para>
</note>
<para>
See also <function>variant_get_type</function>.
</para>
</section>
</partintro>
&reference.com.entities.variant;
</reference>
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vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
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