title: Variable name INSIDE quotation marks
body: <p>I was wondering if it is 100% correct to write variable names inside quotation marks.</p>
  
  <p>I mean, is there any reason to do </p>
  
  <pre><code>echo "Hello my name is " . $name;
  </code></pre>
  
  <p>instead of</p>
  
  <pre><code>echo "Hello my name is $name";
  </code></pre>
  
  <p>Thanks.</p>