dedecms在联动菜单中获取三级ename的开发方法

实现教程：

//参数$evalue联动的值$egroup联动的别名

//获得联动全部内容：

function ed_get_enum($evalue,$egroup){
global $db;

//获取小数点后的数值

$fr=explode(".",$evalue);

//判断联动等级

//判断是否整除500(是则为一级联动)

if($evalue%500=='0')
{
$rs_top=$db->getOne("select * from dede_sys_enum where evalue='$evalue' and egroup='$egroup'");
$ename_top = $rs_top[ename];
}

//判断能否整除500 并且没有小数点(是则为二级联动)

   if($evalue%500!='0' && $fr[1]=='')
    {
    $rs_son=$db->getOne("select * from dede_sys_enum where evalue='$evalue' and egroup='$egroup'");
    $ename_son = $rs_son[ename];
}

//换算一级联动

$evalue_top = $evalue-($evalue%500);
$rs_top=$db->getOne("select * from dede_sys_enum where evalue='$evalue_top' and egroup='$egroup'");
$ename_top = $rs_top[ename];
}

//判断小数点后是否有值(有值则为三级联动)

if($fr[1]!='')
 {
 $rs_sec=$db->getOne("select * from dede_sys_enum where evalue='$evalue' and egroup='$egroup'");
 $ename_sec = $rs_sec[ename];

//换算二级联动

//获取小数点前的数值

$evalue_son = $fr[0];
$rs_son=$db->getOne("select * from dede_sys_enum where evalue='$evalue_son' and egroup='$egroup'");
$ename_son = $rs_son[ename];

//换算一级联动

$evalue_top =$evalue_son-($evalue_son%500);
$rs_top=$db->getOne("select * from dede_sys_enum where evalue='$evalue_top' and egroup='$egroup'");
$ename_top = $rs_top[ename];
}

//返回联动

return $ename_top."  ".$ename_son."  ".$ename_sec;  
}

使用方法：

{dede:php}

//联动的evalue值,联动的字段

echo ed_getSelect('500','nativeplace');
 {/dede:php}
 [field:nativeplace function="ed_getSelect(@me,'nativeplace')"/]