Can a php variable hold multiple data types at once?
<p>I'm guessing this has been asked already.  I know in php you can change the datatype of a variable as in this example.</p>

<pre><code>$var = '3';

if (is_string($var))
    echo "variable is now string &lt;br /&gt;";

$var = $var+1;

if (is_int($var))
    echo "variable is now integer &lt;br /&gt;";
</code></pre>

<p>However can a variable hold more than one data type at a single point in time?</p>
