关于php、mysql,二叉树高手来帮忙,怎么计算下面某个节点是否在某节点下面

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Release: 2016-06-13 12:38:35
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关于php、mysql,二叉树高手来帮忙,如何计算下面某个节点是否在某节点下面?

本帖最后由 kwdpx 于 2013-09-05 16:57:47 编辑


数据库member结构:
编号     上级ID    金额
id      sh1    jine
1001    999    49
1002    1001   20
1003    1001   29
1004    1002   10
1005    1003    12
1006    1002    10
1007    1006    4
1008    1003    17
1013     1008    8
1015    1006    6
1021    1008    9
……

比如想知道ID:1021在不在1003下面?如果在就显示在,如果不在1003下面就显示不在:

if(){
echo "在";
}else{
echo "不在";
exit();
}
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