php 多级导航显示
写一次,想一次...重新做一次... 这回就放这了..以后用直接过来copy.第一段代码
得到要显示的类别.
一级目录放在categories,
二级目录放在categories,
三级目录放在categories,
....以此类推
不过一般最多到3级就不再往下分了.
$cpath = array();
if(!empty($_REQUEST["parentId"])){
//category path
//get the category path
//put current category id in $cpath
$current_category["parentId"] = $_REQUEST["parentId"];
// put parent category id in $cpath
do{
array_unshift($cpath,$current_category["parentId"]);
$data_category = array(
"id" => $current_category["parentId"]
);
$current_category = array();
$current_category = pos($db_conn->search($db_category,$data_category));
}while(!empty($current_category["parentId"]));
}
//add the first level category parentId
array_unshift($cpath,"null");
// get all categories
$categories_level_count = sizeof($cpath);
for($i=0;$i $cpath[$i]
);
//get first level categories
$categories[$i] = $db_conn->search($db_category,$data_category);
//echo $db_category->search($data_category)."";
}
第二段代码是将菜单以
<ul>
<li>
<ul>
...
</ul>
</li>
</ul>
的形式显示菜单
function show_left_navigation($i){
global $categories,$cpath;
if(empty($categories[$i]))
return;
echo '<ul>';
foreach($categories[$i] as $id=>$category){
echo '';
if($id==end($cpath))
echo '<a href="advancedSearch.php?parentId='.$id.'">'.$category["name"].'</a>';
else
echo '<a href="advancedSearch.php?parentId='.$id.'">'.$category["name"].'</a>';
if(in_array($id,$cpath))
show_left_navigation($i+1);
echo '';
}
echo '</ul>';
}
show_left_navigation(0);
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