Instantiate a class with or without parentheses?
<p>I have not found any official documentation on this. But afaik it doesn't matter whether a class is instantiated with our without the parentheses - as long as there are no parameters involved, right?</p>

<pre><code>$car = new Car;
</code></pre>

<p>or</p>

<pre><code>$car = new Car();
</code></pre>

<p>But can anyone tell me if there's a difference in performance? Which way is the 'more correct' way? Is there any official documentation for this?</p>
