</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">_keys</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;while(!isset(</span><span style="color: #0000BB">$_SESSION</span><span style="color: #007700">[</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">_key</span><span style="color: #007700">])&nbsp;&amp;&amp;&nbsp;</span><span style="color: #0000BB">$this</span><span 