Superglobals can't be accessed via variable variables in a function?
<p>I can't access superglobals via variable variables inside a function. Am I the source of the problem or is it one of PHP's subtleties? And how to bypass it?</p>

<pre><code>print_r(${'_GET'});
</code></pre>

<p>works fine</p>

<pre><code>$g_var = '_GET';
print_r(${$g_var});
</code></pre>

<p>Gives me a Notice: Undefined variable: _GET</p>
