<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Performs a bitwise implication on two variants</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.variant-idiv.html">variant_idiv</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.variant-int.html">variant_int</a></div> <div class="up"><a href="ref.com.html">COM Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.variant-imp" class="refentry"> <div class="refnamediv"> <h1 class="refname">variant_imp</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">variant_imp</span> — <span class="dc-title">Performs a bitwise implication on two variants</span></p> </div> <div class="refsect1 description" id="refsect1-function.variant-imp-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>variant_imp</strong></span> ( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$left</code></span> , <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$right</code></span> )</div> <p class="para rdfs-comment"> Performs a bitwise implication operation. </p> </div> <div class="refsect1 parameters" id="refsect1-function.variant-imp-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">left</code></em></span> <dd> <p class="para"> The left operand. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">right</code></em></span> <dd> <p class="para"> The right operand. </p> </dd> </dt> </dl> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> As with all the variant arithmetic functions, the parameters for this function can be either a PHP native type (integer, string, floating point, boolean or <strong><code>NULL</code></strong>), or an instance of a COM, VARIANT or DOTNET class. PHP native types will be converted to variants using the same rules as found in the constructor for the <a href="class.variant.html" class="xref">VARIANT</a> class. COM and DOTNET objects will have the value of their default property taken and used as the variant value. </p> <p class="para"> The variant arithmetic functions are wrappers around the similarly named functions in the COM library; for more information on these functions, consult the MSDN library. The PHP functions are named slightly differently; for example <span class="function"><a href="function.variant-add.html" class="function">variant_add()</a></span> in PHP corresponds to <em>VarAdd() </em> in the MSDN documentation. </p> </p></blockquote> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.variant-imp-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> <table class="doctable table"> <caption><strong>Variant Implication Table</strong></caption> <thead> <tr> <th>If <em><code class="parameter">left</code></em> is</th> <th>If <em><code class="parameter">right</code></em> is</th> <th>then the result is</th> </tr> </thead> <tbody class="tbody"> <tr><td><strong><code>TRUE</code></strong></td><td><strong><code>TRUE</code></strong></td><td><strong><code>TRUE</code></strong></td></tr> <tr><td><strong><code>TRUE</code></strong></td><td><strong><code>FALSE</code></strong></td><td><strong><code>TRUE</code></strong></td></tr> <tr><td><strong><code>TRUE</code></strong></td><td><strong><code>NULL</code></strong></td><td><strong><code>TRUE</code></strong></td></tr> <tr><td><strong><code>FALSE</code></strong></td><td><strong><code>TRUE</code></strong></td><td><strong><code>TRUE</code></strong></td></tr> <tr><td><strong><code>FALSE</code></strong></td><td><strong><code>FALSE</code></strong></td><td><strong><code>TRUE</code></strong></td></tr> <tr><td><strong><code>FALSE</code></strong></td><td><strong><code>NULL</code></strong></td><td><strong><code>TRUE</code></strong></td></tr> <tr><td><strong><code>NULL</code></strong></td><td><strong><code>TRUE</code></strong></td><td><strong><code>TRUE</code></strong></td></tr> <tr><td><strong><code>NULL</code></strong></td><td><strong><code>FALSE</code></strong></td><td><strong><code>NULL</code></strong></td></tr> <tr><td><strong><code>NULL</code></strong></td><td><strong><code>NULL</code></strong></td><td><strong><code>NULL</code></strong></td></tr> </tbody> </table> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.variant-idiv.html">variant_idiv</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.variant-int.html">variant_int</a></div> <div class="up"><a href="ref.com.html">COM Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>