strange behavior in PHP temp var
<pre><code>foreach ($arr1 as $v){
 ...
}

foreach ($arr2 as $v){
 ...
}
</code></pre>

<p>then, the two <code>$v</code> will have some strange behavior. If i replace the second <code>$v</code> with <code>$v2</code>, then everything is ok.</p>
