r />&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;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">])?</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=