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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-or">
<refnamediv>
<refname>variant_or</refname>
<refpurpose>
Performs a logical disjunction on two variants
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>mixed</type><methodname>variant_or</methodname>
<methodparam><type>mixed</type><parameter>left</parameter></methodparam>
<methodparam><type>mixed</type><parameter>right</parameter></methodparam>
</methodsynopsis>
<para>
Performs a bitwise OR operation, according to the following truth table;
note that this is slightly different from a regular OR operation.
<table>
<title>Variant OR Rules</title>
<tgroup cols="3">
<thead>
<row>
<entry>If <parameter>left</parameter> is</entry>
<entry>If <parameter>right</parameter> is</entry>
<entry>then the result is</entry>
</row>
</thead>
<tbody>
<row><entry>&true;</entry><entry>&true;</entry><entry>&true;</entry></row>
<row><entry>&true;</entry><entry>&false;</entry><entry>&true;</entry></row>
<row><entry>&true;</entry><entry>&null;</entry><entry>&true;</entry></row>
<row><entry>&false;</entry><entry>&true;</entry><entry>&true;</entry></row>
<row><entry>&false;</entry><entry>&false;</entry><entry>&false;</entry></row>
<row><entry>&false;</entry><entry>&null;</entry><entry>&null;</entry></row>
<row><entry>&null;</entry><entry>&true;</entry><entry>&true;</entry></row>
<row><entry>&null;</entry><entry>&false;</entry><entry>&null;</entry></row>
<row><entry>&null;</entry><entry>&null;</entry><entry>&null;</entry></row>
</tbody>
</tgroup>
</table>
</para>
<para>
See also <function>variant_and</function>,
<function>variant_xor</function>.
</para>
&reference.com.variant-arith;
</refsect1>
</refentry>
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