Can you append strings to variables in PHP?
<p>Why does this output 0? It works with numbers instead of strings just fine. I have similar code in Javascript that also works. Does PHP not like += with strings?</p>

<pre><code>&lt;?php
$selectBox = '&lt;select name="number"&gt;';
for ($i=1;$i&lt;=100;$i++)
{
    $selectBox += '&lt;option value="' . $i . '"&gt;' . $i . '&lt;/option&gt;';
}
$selectBox += '&lt;/select&gt;';

echo $selectBox;
?&gt;
</code></pre>
