频道导航

• ▸ PHP
• ▸ Java
• ▸ Java SE
• ▸ Python
• ▸ C#
• ▸ C&C++
• ▸ Ruby
• ▸ VB
• ▸ asp.Net
• ▸ Go
• ▸ Perl
• ▸ netty
• ▸ Django
• ▸ Delphi
• ▸ Jsp
• ▸ .NET Core
• ▸ Spring
• ▸ Flask
• ▸ Springboot
• ▸ SpringMVC
• ▸ Lua
• ▸ Laravel
• ▸ Mybatis
• ▸ Asp
• ▸ Groovy
• ▸ ThinkPHP
• ▸ Yii
• ▸ swoole
• ▸ HTML
• ▸ HTML5
• ▸ JavaScript
• ▸ CSS
• ▸ jQuery
• ▸ Bootstrap
• ▸ Angularjs
• ▸ TypeScript
• ▸ Vue
• ▸ Dojo
• ▸ Json
• ▸ Electron
• ▸ Node.js
• ▸ extjs
• ▸ Express
• ▸ XML
• ▸ ES6
• ▸ Ajax
• ▸ Flash
• ▸ Unity
• ▸ React
• ▸ Flex
• ▸ Ant Design
• ▸ Web前端
• ▸ 微信小程序
• ▸ 微信公众号
• ▸ iOS
• ▸ Android
• ▸ Swift
• ▸ Hybrid
• ▸ Cocos2d-x
• ▸ Flutter
• ▸ Xcode
• ▸ Silverlight
• ▸ cocoa
• ▸ Cordova

• 前端之家
• PHP
• php递归实现无限分类生成下拉列表的函数

<div class="codebody" id="code84084">
/—————————————————— /
//– 递归实现无限分类生成下拉列表函数
//– $tpl->assign('sort_list',createSortOptions ());
//– $tpl->assign('sort_list',createSortOptions ($sort_id));
/—————————————————— /
function createSortOptions ($selected=0,$parent_id=0,$n=-1)
{
global $db;
$sql = "SELECT FROM @__article_sort WHERE parent_id = '{$parent_id}'";
$options = ";
static $i = 0;
if ($i == 0)
{
$options .= '<option value="0″ >请选择';
}
$res = $db->query ($sql);
if ($res)
{
$n++;
while ($row = $db->fetch_assoc ($res))
{
$i++;
$options .="<option value='{$row['sort_id']}'";
if ($row['sort_id'] == $selected)
{
$options .=' selected ';
}
$options .=">".str_repeat('',$n3).$row['sort_name']."\n";
$options .=createSortOptions ($selected,$row['sort_id'],$n);
}
}
return $options;
}