title: Any hook in WordPress that runs after session is started?
body: <p>I need to set a session value in my plugin, but session isn't started when WordPress loads my plugin and I don't want to run <code>if (!session_id()) session_start();</code> manually, because other plugins might rely on setting cookies, etc and face a &quot;headers already sent error&quot;.</p>
  <p>Is there any hook in WordPress that runs after session is started?</p>
  <p>If not, how do you professionals handle such situations?</p>