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dede5.7 动态导航下拉菜单的实现代码，需要的朋友可以参考一下

1.修改 include下面taglib文件夹里的channel.lib.php文件 替换成我的

代码如下:

<?php

function lib_channel(&$ctag,&$refObj)

{

global $_sys_globals,$envs,$dsql;

$attlist = "typeid|0,reid|0,row|100,col|1,type|son,currentstyle|";

FillAttsDefault($ctag->CAttribute->Items,$attlist);

extract($ctag->CAttribute->Items, EXTR_SKIP);

$innertext = $ctag->GetInnerText();

if(empty($typeid) && $envs['typeid']!=0)

{

$typeid = $envs['typeid'];

$reid = $envs['reid'];

}else{

$reid=0;

} 

if($type==''||$type=='sun') $type="son";

if($innertext=='') $innertext = GetSysTemplets("channel_list.htm");

if($reid==0 && $typeid>0)

{

$dbrow = $dsql->GetOne("Select reid From <a href="mailto:`dede_arctype">`dede_arctype</a>` where id='$typeid' ");

if(is_array($dbrow)) $reid = $dbrow['reid'];

}

$likeType = '';

if($type=='top')

{

$sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,description

From <a href="mailto:`dede_arctype">`dede_arctype</a>` where reid=0 And ishidden<>1 order by sortrank asc limit 0,$row";

}

else if($type=="son")

{

//if($_sys_globals['typeid']>0) $typeid = $_sys_globals['typeid'];

if($typeid==0) {

return '';

}

$sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,description

From <a href="mailto:`dede_arctype">`dede_arctype</a>` where reid='$typeid' And ishidden<>1 order by sortrank asc limit 0,$row";

}

else if($type=="self")

{

if($reid==0) {

return '';

}

$sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,description

From <a href="mailto:`dede_arctype">`dede_arctype</a>` where reid='$reid' And ishidden<>1 order by sortrank asc limit 0,$row";

}

//And id<>'$typeid'

$dtp2 = new DedeTagParse();

$dtp2->SetNameSpace("field","[","]");

$dtp2->LoadSource($innertext);

$dsql2 = clone $dsql;

$dsql->SetQuery($sql);

$dsql->Execute();

$line = $row;

$GLOBALS['autoindex'] = 0;

for($i=0;$i < $line;$i++)

{

if($col>1) $likeType .= "<dl>\r\n";

for($j=0;$j<$col;$j++)

{

if($col>1) $likeType .= "<dd>\r\n";

if($row=$dsql->GetArray())

{

if($type=='self' && $row['id']==$typeid) //处理同级栏目中，当前栏目的样式

{

if($currentstyle!='')

{

$linkOkstr = $currentstyle;

$row['typelink'] = GetOneTypeUrlA($row);

$linkOkstr = str_replace("~typelink~",$row['typelink'],$linkOkstr);

$linkOkstr = str_replace("~typename~",$row['typename'],$linkOkstr);

$likeType .= $linkOkstr;

}

}else

{

$row['typelink'] = $row['typeurl'] = GetOneTypeUrlA($row);

if(is_array($dtp2->CTags))

{

foreach($dtp2->CTags as $tagid=>$ctag){

if(isset($row[$ctag->GetName()]))

{

$dtp2->Assign($tagid,$row[$ctag->GetName()]);

}

elseif (preg_match('/^sonchannel[0-9]*$/',$ctag->GetName()))

{

$dtp2->Assign($tagid,lib_channel_son($ctag,$row['id'],$dsql2));

}

}

}

$likeType .= $dtp2->GetResult();

}

}

if($col>1) $likeType .= "</dd>\r\n";

$GLOBALS['autoindex']++;

}//Loop Col

if($col>1)

{

$i += $col - 1;

$likeType .= " </dl>\r\n";

}

}//Loop for $i

reset($dsql2);

$dsql->FreeResult();

return $likeType;

}

function lib_channel_son($ctag,$typeid = 0,$dsql2)

{

$attlist = "row|100,col|1,currentstyle|";

FillAttsDefault($ctag->CAttribute->Items,$attlist);

extract($ctag->CAttribute->Items, EXTR_SKIP);

$innertext = $ctag->GetInnerText();

$dsql3 = clone $dsql2;

$likeType = '';

//if($_sys_globals['typeid']>0) $typeid = $_sys_globals['typeid'];

if($typeid==0) {

return '';

}

$sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,description

From <a href="mailto:`dede_arctype">`dede_arctype</a>` where reid='$typeid' And ishidden<>1 order by sortrank asc limit 0,$row";

//And id<>'$typeid'

$dtp2 = new DedeTagParse();

$dtp2->SetNameSpace("field","[","]");

$dtp2->LoadSource($innertext);

$dsql2->SetQuery($sql);

$dsql2->Execute();

$line = $row;

for($i=0;$i < $line;$i++)

{

if($col>1) $likeType .= "<dl>\r\n";

for($j=0;$j<$col;$j++)

{

if($col>1) $likeType .= "<dd>\r\n";

if($row=$dsql2->GetArray())

{

$row['typelink'] = $row['typeurl'] = GetOneTypeUrlA($row);

if(is_array($dtp2->CTags))

{

foreach($dtp2->CTags as $tagid=>$ctag){

if(isset($row[$ctag->GetName()]))

{

$dtp2->Assign($tagid,$row[$ctag->GetName()]);

}

elseif (preg_match('/^sonchannel[0-9]*$/',$ctag->GetName()))

{

$dtp2->Assign($tagid,lib_channel_son($ctag,$row['id'],$dsql3));

}

}

}

$likeType .= $dtp2->GetResult();

}

if($col>1) $likeType .= "</dd>\r\n";

}//Loop Col

if($col>1)

{

$i += $col - 1;

$likeType .= " </dl>\r\n";

}

}//Loop for $i

reset($dsql3);

$dsql2->FreeResult();

return $likeType;

}

?>

2.调用

这是我调用的代码 

代码如下:

{dede:channel typeid='1'}

<li>

<a class="" href="[field:typeurl/]" title="">[field:typename/]

<img src="***.gif" /></a>

<div class="sub">

<ul> 

[field:sonchannel0]<li><a href="[field:typeurl/]">[field:typename/]</a></li>[/field:sonchannel0]

</ul>

</div>

</li>

{/dede:channel}