title: What is the meaning of the arrow in prepared statements?
body: <p>what is the meaing of the " -> " in the following statement:</p>
  
  <pre><code>$dbh = new PDO('mysql:host=127.0.0.1;dbname=eventdb;charset=utf8', 'root', '');
  $dbh -&gt; setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  </code></pre>
  
  <p>Thanks a lot!</p>