今天寫了下無限極分類 下面就把代碼貼上來了 寫的不怎麼樣。
method of classify one
<?php
/*
reader: 這是自己寫的無限極分類實現方法 裡面的編輯方法只是對分類名進行了編輯
沒有進行移動操作 小弟能力有限忘大家多多包涵啊
第一種方法:
CREATE TABLE `types` (
`type_id` int(11) NOT NULL AUTO_INCREMENT,
`type_name` varchar(20) NOT NULL,
`type_p_id` varchar(64) NOT NULL DEFAULT '-',
PRIMARY KEY (`type_id`),
KEY `type_name` (`type_name`),
KEY `tname` (`type_name`)
) ENGINE=MyISAM AUTO_INCREMENT=14 DEFAULT CHARSET=utf8
注:
這裡沒做字段有效驗證;
type_id 表示主鍵自增
type_name 表示分類名
type_p_id 表示分類路徑 這裡的分類路徑是 上層父類的分類路徑加上此類的主鍵id 用逗號隔
開
*/
error_reporting(7);
header("Content:text/html;charset=utf-8");
//這裡先進行操作的判斷
$arr = array('list','add','del','edit','addok','edit_ok');
$act= in_array($_GET['ac'],$arr)?$_GET['ac']:$arr[0];
//連接數據庫
$conn = mysql_connect("localhost","root","root")or die('數
據庫連接失敗');
mysql_select_db("study",$conn);
mysql_query("set names utf8");
//根據分類層進行排序
$sql = "select * from types order by type_p_id";
$sql1 = mysql_query($sql);
//添加分類
if($act == "addok"){
$type_id = $_POST['type_id'];
$type_name = $_POST['type_name'];
//如果等於0表示是跟目錄
if($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('添加失敗');</script>";
}
}//如果不等於0
else{
//根據typeid 找到 該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'];
//先將名稱插入進去
$sql = "insert into types set type_name = '{$type_name}'";
$res = mysql_query($sql);
//獲取最後執行的id 然後進行數據更新 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($res){
echo "<script>location.href='ok.php?act=list'</script>";
}else{
echo "<script>alert('添加失敗');</script>";
}
}
}elseif($act=="add"){
?>
<form method="post" action="?ac=addok">
新分類名稱: <input type="text" name="type_name"><br/>
當前分類:<select name="type_id" >
<option value="0">頂級分類</option>
<?php
//循環遍歷分類
while($res = mysql_fetch_assoc($sql1)){
//查找 ","號出現的次數
$m=substr_count($res['type_p_id'],",");
//使用空格替換 "空格"
$strpad = str_pad("",$m*8*2," ");
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"){
//獲取列表根據 分類層進行排序
$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>分類名</td><td>path路徑
</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'];?>">編輯</a> |
<a href="?ac=del&type_id=<?php echo $arr['type_id'];?>">刪除</a></td>
</tr>
<?php
}
?>
</table>
<input type="button" value="添加" onclick="
(location.href='?ac=add')">
<?php
}elseif($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 "當前名稱:{$arr['type_name']}"."<br />";
echo "新名稱:<input type='text' name='n_type_name' >"."<br />";
echo "<input type='hidden' value={$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($act == 'del'){
//這裡的刪除是要把當前分類 和當前的子分類都要刪除 所以用到$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('刪除失敗');</script>";
}
}
?>