title: How to use MYSQLI_CLIENT_INTERACTIVE flag in Wordpress?
body: <p>So we can add a flag to Wordpress database. I can see it in <code>wp-db.php</code>. I see this code:</p>
  
  <pre><code>$client_flags = defined( 'MYSQL_CLIENT_FLAGS' ) ? MYSQL_CLIENT_FLAGS : 0;
  </code></pre>
  
  <p>But I couldn't see anywhere I can define <code>MYSQL_CLIENT_FLAGS</code>. Where should I do it?</p>