PHP：多级菜单或嵌套菜单

我有一个嵌套菜单或多级菜单的代码。但我没有得到我想要的结果。我有一个关于PHP编程语言的基础知识，请耐心等待。PHP：多级菜单或嵌套菜单

<?php 
include("mycon.php"); 
$query1 = mysql_query("SELECT * FROM menu"); 
$row1 = mysql_fetch_array($query1); 
$a = $row1['parent']; 
?> 
<nav class="navbar navbar-inverse navbar-static-top" role="navigation"> 
<div class="container"> 
    <a class="navbar-brand" href="#">Title</a> 
    <ul class="nav navbar-nav"> 

      <?php 


        $query2 = mysql_query("SELECT * from menu"); 
        while ($fetcharray2 = mysql_fetch_array($query2)) { 
         $query5 = mysql_query("SELECT * from menu where menu.parent = '0'"); 
         while ($fetcharray4 = mysql_fetch_array($query5)) { 
        ?> 
        <li class="dropdown"> 
        <?php 

        ?> 
        <a href="#" class="dropdown-toggle" data-toggle="dropdown"><?php echo $fetcharray4['label']?><b class="caret"></b></a> 
        <ul class="dropdown-menu"> 
        <?php 
        $query3 = mysql_query("SELECT * from menu where menu.id and menu.parent like '$a'"); 
        while ($fetcharray3 = mysql_fetch_array($query2)) { 
        ?> 
         <li><a href="<?php echo $fetcharray3['link'];?>"><?php echo $fetcharray3['label'];?></a></li> 
         <?php }?> 
        </ul> 
       </li> 

      <?php }} 
       ?> 

    </ul> 
</div> 
</nav>

那就是我是如何做到的

来源

2016-10-03 Aaron Fist

请解释你想达到什么？ –

难道你不想'$ fetcharray3 = mysql_fetch_array（$ query3）'？您已将它设置为'$ query2' – MatthewS

向我们展示您的表格结构以及您要显示的内容。 –

// Select all entries from the menu table 
$result=mysql_query("SELECT id, label, link, parent FROM menu ORDER BY parent, sort, label"); 
// Create a multidimensional array to conatin a list of items and parents 
$menu = array(
    'items' => array(), 
    'parents' => array() 
); 
// Builds the array lists with data from the menu table 



    // Menu builder function, parentId 0 is the root 
function buildMenu($parent, $menu) 
{ 
    $html = ""; 
    if (isset($menu['parents'][$parent])) 
    { 
     $html .= " 
     <ul>\n"; 
     foreach ($menu['parents'][$parent] as $itemId) 
     { 
      if(!isset($menu['parents'][$itemId])) 
      { 
      $html .= "<li>\n <a href='".$menu['items'][$itemId]['link']."'>".$menu['items'][$itemId]['label']."</a>\n</li> \n"; 
      } 
      if(isset($menu['parents'][$itemId])) 
      { 
      $html .= " 
      <li>\n <a href='".$menu['items'][$itemId]['link']."'>".$menu['items'][$itemId]['label']."</a> \n"; 
      $html .= buildMenu($itemId, $menu); 
      $html .= "</li> \n"; 
      } 
     } 
     $html .= "</ul> \n"; 
    } 
    return $html; 
} 
echo buildMenu(0, $menu); 
while ($items = mysql_fetch_assoc($result)) 
{ 
    // Creates entry into items array with current menu item id ie. $menu['items'][1] 
    $menu['items'][$items['id']] = $items; 
    // Creates entry into parents array. Parents array contains a list of all items with children 
    $menu['parents'][$items['parent']][] = $items['id']; 
}

http://wizardinternetsolutions.com/articles/web-programming/single-query-dynamic-multi-level-menu

来源

2016-10-03 05:13:48 Shibon

设法让我期望的结果与此代码

<?php 
    include("mycon.php"); 

?> 
    <nav class="navbar navbar-inverse navbar-static-top" role="navigation"> 
<div class="container"> 
    <a class="navbar-brand" href="#">Title</a> 
    <ul class="nav navbar-nav"> 
    <?php 
    $query = mysql_query("SELECT * FROM menu where menu.parent = '0'"); 
    while ($row = mysql_fetch_array($query)) { 
?> 
       <li class="dropdown"> 
        <a href="#" class="dropdown-toggle" data-toggle="dropdown"><?php echo $row['label'];?><b class="caret"></b></a> 
        <?php 
        $a = $row['id']; 
        ?> 
         <ul class="dropdown-menu"> 
         <?php 
         $query2 = mysql_query("SELECT * FROM menu where menu.parent = '$a'"); 
         while($row2 = mysql_fetch_array($query2)){ 
         ?> 
         <li><a href="<?php echo $row2['link'];?>"><?php echo $row2['label'];?></a></li> 
         <?php 
         } 
         ?> 
        </ul> 
        <?php 
        ?> 
       </li> 
    <?php }?>  
    </ul> 
</div> 
</nav>

来源

2016-10-04 10:49:49

PHP：多级菜单或嵌套菜单

回答

相关问题