<foreach name="result" item="vo">
<input type="radio" name="level_id" value="{$vo.level_id}"/>{$vo.level_name}

</foreach>

1 =>
array
'member_id' => string '2' (length=1)
'member_name' => string '333' (length=3)
'member_password' => string '3333' (length=4)
'member_sex' => string '1' (length=1)
'member_age' => string '' (length=0)
'level_id' => string '1' (length=1)
'member_qq' => string '' (length=0)
'member_email' => string '' (length=0)
'member_question' => string '' (length=0)
'member_answer' => string '' (length=0)
'reg_time' => string '0000-00-00 00:00:00' (length=19)
'last_time' => string '0000-00-00 00:00:00' (length=19)
'last_ip' => string '' (length=0)
'member_state' => string '0' (length=1)
'level_name' => string '黄金会员' (length=12)
'level_sum' => string '50000' (length=5)
2 =>
array
'member_id' => string '3' (length=1)
'member_name' => string '22' (length=2)
'member_password' => string '22' (length=2)
'member_sex' => string '1' (length=1)
'member_age' => string '' (length=0)
'level_id' => string '1' (length=1)
'member_qq' => string '' (length=0)
'member_email' => string '' (length=0)
'member_question' => string '' (length=0)
'member_answer' => string '' (length=0)
'reg_time' => string '0000-00-00 00:00:00' (length=19)
'last_time' => string '0000-00-00 00:00:00' (length=19)
'last_ip' => string '' (length=0)
'member_state' => string '0' (length=1)
'level_name' => null
'level_sum' => null


怎么之关联一次 再次就关联为空了 是什么原因