title: PSR doc comments
body: <p>Is there a documentation about the psr standards for doc comments in php.</p>
  
  <p>example:</p>
  
  <pre><code>/** @var string $str */
  $str = "test";
  /** @var array $arr */
  $arr = [];
  </code></pre>
  
  <p>is this allowed or do I need to do it like this:</p>
  
  <pre><code>/** @var string $str */
  $str = "test";
  
  /** @var array $arr */
  $arr = [];
  </code></pre>