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<?xml version='1.0' encoding='iso-8859-1'?>
<!-- $Revision: 1.1 $ -->
<!-- Generated by xml_proto.php v2.0. Found in /scripts directory of phpdoc. -->
<refentry id="function.variant-mul">
<refnamediv>
<refname>variant_mul</refname>
<refpurpose>
multiplies the values of the two variants and returns the result
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>mixed</type><methodname>variant_mul</methodname>
<methodparam><type>mixed</type><parameter>left</parameter></methodparam>
<methodparam><type>mixed</type><parameter>right</parameter></methodparam>
</methodsynopsis>
<para>
Multiplies <parameter>left</parameter> by <parameter>right</parameter> and
returns the result, subject to the following rules:
<table>
<title>Variant Multiplication Rules</title>
<tgroup cols="2">
<thead>
<row>
<entry>If</entry>
<entry>Then</entry>
</row>
</thead>
<tbody>
<row>
<entry>Both expressions are of the string, date, character, boolean type</entry>
<entry>Multiplication</entry>
</row>
<row>
<entry>One expression is a string type and the other a
character</entry>
<entry>Multiplication</entry>
</row>
<row>
<entry>One expression is numeric and the other is a string</entry>
<entry>Multiplication</entry>
</row>
<row>
<entry>Both expressions are numeric</entry>
<entry>Multiplication</entry>
</row>
<row>
<entry>Either expression is NULL</entry>
<entry>NULL is returned</entry>
</row>
<row>
<entry>Both expressions are empty</entry>
<entry>Empty string is returned</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
<para>
Boolean values are converted to -1 for &false; and 0 for &true;.
</para>
<para>
See also <function>variant_div</function>,
<function>variant_idiv</function>.
</para>
&reference.com.variant-arith;
</refsect1>
</refentry>
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