what mean string in {}?
<p>I have string</p>

<pre><code>$name = 'user';

$run-&gt;{$name};
</code></pre>

<p>And i have result notice :</p>

<pre><code>Undefined property: run::$user
</code></pre>

<p>I have in controller method user, but in error i see string ang $ char.</p>

<p>Is this is a some special char ? </p>
