PHP "" vs ''
<p>I'm just wondering what's more costly, something like:</p>

<pre><code>echo "Hello world, my name is $name";
</code></pre>

<p>or</p>

<pre><code>echo 'Hello world, my name is '.$name;
</code></pre>

<p>I know in this case it wouldn't make much difference, but maybe here it would:</p>

<pre><code>for($i = 0; $i &lt; 10000; $i++)
{
    echo 'Hello world, my name is '.$name;
}
</code></pre>

<p>Thanks in advance!</p>
