今天写了下无限极分类 下面就把代码贴上来了 写的不怎么样。

method of classifyone
复制代码 代码如下:
<?php

error_reporting(7);
header("Content:text/html;charset=utf-8");
//这里先进行操作的判断
$arr = array('list','add','del','edit','addok','edit_ok');
$act= in_array($_GET['ac'],$arr)?$_GET['ac']:$arr[0];
//连接数据库
$conn = mysql_connect("localhost","root","root")or die('数据库连接失败');
mysql_select_db("study",$conn);
mysql_query("set names utf8");
//根据分类层进行排序
$sql = "select * from types order by type_p_id";
$sql1 = mysql_query($sql);
//添加分类
if($act == "addok"){
$type_id = $_POST['type_id'];
$type_name = $_POST['type_name'];
//如果等于0表示是跟目录
if($type_id=="0"){
$sql = "insert into types set type_name = '{$type_name}'";
$res = mysql_query($sql);
$id = mysql_insert_id();
$sql = "update types set type_p_id = '$id,' where type_id=$id";
$res = mysql_query($sql);
if( mysql_affected_rows ()>0){
echo "<script>location.href='ok.php?act=list'</script>";
}else{
echo "<script>alert('添加失败');</script>";
}
}//如果不等于0
else{
//根据typeid 找到 该id下的type_p_id
$sql = "select type_p_id from `types` where type_id = $type_id";
$res = mysql_query($sql);
$res = mysql_fetch_assoc($res);
$type_id = $res['type_p_id'];

//先将名称插入进去
$sql = "insert into types set type_name = '{$type_name}'";
$res = mysql_query($sql);
//获取最后执行的id 然后进行数据更新 主要更新 type_p_id
$id = mysql_insert_id();
$sql = "update types set type_p_id = '$type_id$id,' where type_id=$id";
$res = mysql_query($sql);
if($res){
echo "<script>location.href='ok.php?act=list'</script>";
}else{
echo "<script>alert('添加失败');</script>";
}
}
}elseif($act=="add"){
?>
<form method="post" action="?ac=addok">
新分类名称: <input type="text" name="type_name"><br/>
当前分类：<select name="type_id" >
<option value="0">顶级分类</option>
<?php
//循环遍历分类
while($res = mysql_fetch_assoc($sql1)){
//查找 ","号出现的次数
$m=substr_count($res['type_p_id'],",");
//使用空格替换 "空格"
$strpad = str_pad("",$m*8*2,"&#12288;");
if($m==1){
$sele = "disabled";
}else{
$sele = "";
}
?>
<option value="<?php echo $res['type_id']?>"><?php echo $strpad.$res['type_name']?></option>
<?php
}
?>
</select><br />
<input type="submit" value="添加"/>
</form>
<?php
}elseif($act == "list"){
//获取列表根据 分类层进行排序
$sql = "select * from types order by type_p_id";
$res = mysql_query($sql);
?>
<table width="50%" style="font-size:12px;margin-left:20%;">
<tr><td>id</td><td>分类名</td><td>path路径</td><td>操作</td></tr>
<?php
while($arr = mysql_fetch_assoc($res)){?>
<tr>
<td><?php echo $arr['type_id']?></td>
<td><?php echo $arr['type_name']?></td>
<td><?php echo $arr['type_p_id']?></td>
<td ><a href="?ac=edit&type_id=<?php echo $arr['type_id'];?>">编辑</a> |
<a href="?ac=del&type_id=<?php echo $arr['type_id'];?>">删除</a></td>
</tr>
<?php
}
?>
</table>
<input type="button" value="添加" onclick="(location.href='?ac=add')">
<?php
}elseif($act == "edit"){
$id = $_GET['type_id'];
$sql = "select *from `types` where type_id=$id ";
$res = mysql_query($sql);
echo "<form method='post' action='?ac=edit_ok'>";
while($arr = mysql_fetch_assoc($res)){
echo "当前名称：{$arr['type_name']}"."<br />";
echo "新名称：<input type='text' name='n_type_name' >"."<br />";
echo "<input type='hidden' value={$arr['type_id']} name='id'/>";
}
echo "<input type='submit' value='更新'>";
echo "</form>";
}elseif($act == "edit_ok"){
$name = trim($_POST['n_type_name']);
$id = $_POST['id'];
if(!empty($name)){
$sql = "update `types` set type_name='$name' where type_id=$id";
mysql_query($sql);
echo "<script>location.href('ok.php?act=list')</script>";
}else{
echo "<script>location.href('ok.php?act=list')</script>";
}
}elseif($act == 'del'){
//这里的删除是要把当前分类 和当前的子分类都要删除 所以用到$id%
$id = $_GET['type_id'];
$sql ="delete from `types` where type_p_id like '$id%' ";
$res = mysql_query($sql);
if($res){
echo "<script>location.href('ok.php?act=list')</script>";
}else{
echo "<script>alert('删除失败');</script>";
}
}
?>

types表：

下面是效果图：

method of classify two
复制代码 代码如下:
<?php

error_reporting(7);
header("Content-type:text/html;charset=utf-8");
//这里先进行操作的判断
$arr = array('list','add','del','edit','addok','edit_ok');
$act= in_array($_GET['ac'],$arr)?$_GET['ac']:$arr[0];
//连接数据库
$conn = mysql_connect("localhost","root","root")or die('数据库连接失败');
mysql_select_db("study",$conn);
mysql_query("set names utf8");

if($act=="add"){
/**
* @access public
* @param array $types 数组 这里的数组要传引用&
* @param interal $pid 所属的分类上层分类id
* @param int $path 分类层 默认从0开始每次循环加一
* @return array();
*/
function getTypes(&$types=array(),$pid=0,$path=0){
$sql = "select * from `type` where type_p_id = $pid";
$res = mysql_query($sql);
while($row = mysql_fetch_assoc($res)){
$str = "";
for($i=0;$i<$path;$i++){
$str.="&#12288;";
}
$row['new_type_name'] = $str.$row['type_name'];
$types[] = $row;
getTypes($types,$row['type_id'],($path+1));
}
return $types;
}
//获取分类 调用函数
getTypes($types);
//获取列表根据 分类层进行排序
$sql1 = "select * from type order by type_id";
$sqll = mysql_query($sql1);
?>
<form method="post" action="?ac=addok">
新分类名称: <input type="text" name="type_name"><br/>
当前分类：<select name="type_id" >
<option value="0">顶级分类</option>
<?php
//循环这个数组将分类正确输出
for($i=0;$i<count($types);$i++){
?>
<option value="<?php echo $types[$i]['type_id']?>"><?php echo $types[$i]['new_type_name']?></option>
<?php
}
?>
</select><br />
<input type="submit" value="添加"/>
</form>
<?php
}elseif($act == "addok"){
$type_name = $_POST['type_name'];
$type_id = $_POST['type_id'];
$sql = "insert into `type`(type_name,type_p_id) values ('$type_name','$type_id')";
$res = mysql_query($sql);
if(mysql_insert_id()>0){
echo "<script>location.href='two.php?act=list'</script>";
}else{
echo "<script>alert('添加失败');</script>";
}
}elseif($act == "list"){
//获取列表根据 分类层进行排序
$sql = "select * from type order by concat(type_id,type_p_id)";
$res = mysql_query($sql);
?>
<table width="50%" style="font-size:12px;margin-left:20%;">
<tr><td>id</td><td>分类名</td><td>path路径</td><td>操作</td></tr>
<?php
while($arr = mysql_fetch_assoc($res)){?>
<tr>
<td><?php echo $arr['type_id']?></td>
<td><?php echo $arr['type_name']?></td>
<td><?php echo $arr['type_p_id']?></td>
<td ><a href="?ac=edit&type_id=<?php echo $arr['type_id'];?>">编辑</a> |
<a href="?ac=del&type_id=<?php echo $arr['type_id'];?>">删除</a></td>
</tr>
<?php
}
?>
</table>
<input type="button" value="添加" onclick="(location.href='?ac=add')">
<?php
}elseif($act == "del"){
/***
这里要删除大分类的时候必须要删除该大分类下的子分类
所以这里开始mysql事务 mysql 事务开启的方式 事务详细说明请参考
*/
mysql_query("SET AUTOCOMMIT=1");//开启事务
$type_id = $_GET['type_id'];
//删除该分类
$sqlone = "delete from `type` where type_id=$type_id";
//删除该分类下的子分类
$sqltwo = "delete from `type`where type_p_id=$type_id";
$res1 = mysql_query($sqlone);
$res2 = mysql_query($sqltwo);
if($res1 && $res2)
{
mysql_query("COMMIT");
echo "<script>location.href='two.php?act=list'</script>";
}else{
mysql_query("ROLLBACK");
echo "<script>alert('删除失败');</script>";
}
}
?>

type表：

下面是效果图

写的确实不怎么样啊还望大家见谅。