problem accessing check-boxes values in some installations
<p>I have following structure for check-boxes</p>

<pre><code>&lt;input type="checkbox" name="reg_field['first_name']" value="1" /&gt; First Name&lt;br /&gt;
&lt;input type="checkbox" name="reg_field['last_name']" value="1" /&gt; Last Name&lt;br /&gt;
&lt;input type="checkbox" name="reg_field['paypal_email']" value="1"/&gt; PayPal Email&lt;br /&gt;
&lt;input type="checkbox" name="reg_field['website_url']" value="1" /&gt; Website URL&lt;br /&gt;
&lt;input type="checkbox" name="reg_field['address']" value="1"/&gt; Address&lt;br /&gt;
</code></pre>

<p>For some installation, I can access these fields as</p>

<pre><code>$reg_new_values = (isset($_POST['reg_field'])?$_POST['reg_field']:array());

echo $reg_new_values["'first_name'"]
</code></pre>

<p>but for some installation, it won't work at all?</p>

<p>Is my structure wrong, or do I have to change some settings in PHP.INI</p>
