title: What is ::class in PHP?
body: <p>What is the <code>::class</code> notation in PHP?</p>
  
  <p>A quick Google search returns nothing because of the nature of the syntax.</p>
  
  <p>colon colon class</p>
  
  <p>What's the advantage of using this notation?</p>
  
  <pre><code>protected $commands = [
      \App\Console\Commands\Inspire::class,
  ];
  </code></pre>