Weird PHP Behavior
<pre><code>&lt;?php
$dog[] = "12";
$dog[] = "3";

for ($i = 0; $i &lt; 2; $i++) {
  $dig = $dog[i];
  echo $dig;
}
?&gt;
</code></pre>

<p><code>$dig</code> is always null. Why?</p>
