实现php无限极分类的方法2014-04-17 cnblogs 高进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 classify one
<?php /*reader: 这是自己写的无限极分类实现方法 里面的编辑方法只是对分类名进行了编辑没有进行移动操作 小弟能力有限忘大家多多包涵啊 第一种方法: 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:这里没做字段有效验证;type_id 表示主键自增 type_name 表示分类名type_p_id 表示分类路径 这里的分类路径是 上层父类的分类路径加上此类的主键id 用逗号隔开 */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" > <optionvalue="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," "); if($m==1){ $sele = "disabled"; }else{ $sele = ""; } ?> <option value="<?php echo $res["type_id"]?>"><?phpecho $strpad.$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 "<formmethod="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>"; } } ?>