which is the best way to get the value of 'session_key','uid','expires'
<p>i have a string </p>

<p>'''
{"session_key":"3.KbRiifBOxY_0ouPag6__.3600.1267063200-16423986","uid":164
23386,"expires":12673200,"secret":"sm7WM_rRtjzXeOT_jDoQ__","sig":"6a6aeb66
64a1679bbeed4282154b35"}
'''</p>

<p>how to get the value .</p>

<p>thanks</p>
