织梦cms5.7动态导航下拉菜单代码实现方法

dede5.7 动态导航下拉菜单的代码实例本文介绍一个在dedecms5.7中实现动态导航下拉菜单的代码实例，供大家学习参考。1、修改include/taglib文件夹中的channel.lib.php文件，替换为如下内容：

<?php/** * 动态导航下拉菜单 * Edit www.genban.org * Date 2015-5-3*/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,descriptionFrom <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 '';}$sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,descriptionFrom <a href="mailto:`dede_arctype">`dede_arctype</a>` where reid='$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,descriptionFrom <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) $likeType .= "<dl> ";for($j=0;$j<$col;$j++){if($col>1) $likeType .= "<dd> ";if($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) $likeType .= "</dd> ";$GLOBALS['autoindex']++;}//Loop Colif($col>1){$i += $col - 1;$likeType .= " </dl> ";}}//Loop for $ireset($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 '';}$sql = "Select id,typename,typedir,isdefault,ispart,defaultname,namerule2,descriptionFrom <a href="mailto:`dede_arctype">`dede_arctype</a>` where reid='$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) $likeType .= "<dl> ";for($j=0;$j<$col;$j++){if($col>1) $likeType .= "<dd> ";if($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) $likeType .= "</dd> ";}//Loop Colif($col>1){$i += $col - 1;$likeType .= " </dl> ";}}//Loop for $ireset($dsql3);$dsql2->FreeResult();return $likeType;}?>

调用示例：{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}