PHP snippet not working as I expected
<p>I have this variable: <code>$logged_in_person_rsvp</code> - its value = -1</p>

<p>Then I run this code:   </p>

<pre><code>$yes_checked = ($logged_in_person_rsvp===1) ? "checked" : "";
$maybe_checked = ($logged_in_person_rsvp===-1) ? "checked" : "";
$no_checked = ($logged_in_person_rsvp===0) ? "checked" : "";

echo '&lt;p&gt;logged_in_person_rsvp: '.$maybe_checked.'&lt;/p&gt;';
</code></pre>

<p>And I get output as nothing.  But I was expecting the output to be -1</p>

<p>Anyone understand why? This is weird syntax I inherited :)</p>
