title: PHP: Is it better to concatenate on 1 line or multiple lines? Or is there a difference?
body: <p>Is there a difference or is one better than the other of the following:</p>
  
  <pre><code>$var = '';
  ...
  $var .= 'blah blah';
  $var .= $var2;
  $var .= 'blah blah';
  </code></pre>
  
  <p>Or</p>
  
  <pre><code>$var = '';
  ...
  $var .= 'blah blah' . $var2 . 'blah blah';
  </code></pre>
  
  <p>Is there a speed difference or is there a reason why you'd pick one over the other?</p>