php无限极分类实现的两种解决方法

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Release: 2023-02-28 12:54:01
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本篇文章介绍了,在php中无限极分类实现的两种解决方法。需要的朋友参考下

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 &#39;-&#39;,
  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(&#39;list&#39;,&#39;add&#39;,&#39;del&#39;,&#39;edit&#39;,&#39;addok&#39;,&#39;edit_ok&#39;);
$act= in_array($_GET[&#39;ac&#39;],$arr)?$_GET[&#39;ac&#39;]:$arr[0];
//连接数据库
$conn = mysql_connect("localhost","root","root")or die(&#39;数据库连接失败&#39;);
mysql_select_db("study",$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[&#39;type_id&#39;];
    $type_name = $_POST[&#39;type_name&#39;];
    //如果等于0表示是跟目录
    if($type_id=="0"){
        $sql = "insert into types set type_name = &#39;{$type_name}&#39;";
        $res = mysql_query($sql);
        $id = mysql_insert_id();
        $sql = "update types set type_p_id = &#39;$id,&#39; where type_id=$id";
        $res = mysql_query($sql);
        if( mysql_affected_rows ()>0){
            echo "<script>location.href=&#39;ok.php?act=list&#39;</script>";
        }else{
            echo "<script>alert(&#39;添加失败&#39;);</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[&#39;type_p_id&#39;];

        //先将名称插入进去
        $sql = "insert into types set type_name = &#39;{$type_name}&#39;";
        $res = mysql_query($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();
        $sql = "update types set type_p_id = &#39;$type_id$id,&#39; where type_id=$id";
        $res = mysql_query($sql);
        if($res){
            echo "<script>location.href=&#39;ok.php?act=list&#39;</script>";
        }else{
            echo "<script>alert(&#39;添加失败&#39;);</script>";
        }
    }
}elseif($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[&#39;type_p_id&#39;],",");
        //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[&#39;type_id&#39;]?>"><?php  echo $strpad.$res[&#39;type_name&#39;]?></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[&#39;type_id&#39;]?></td>
    <td><?php echo $arr[&#39;type_name&#39;]?></td>
    <td><?php echo $arr[&#39;type_p_id&#39;]?></td>
    <td ><a href="?ac=edit&type_id=<?php echo $arr[&#39;type_id&#39;];?>">编辑</a> |
        <a href="?ac=del&type_id=<?php echo $arr[&#39;type_id&#39;];?>">删除</a></td>
</tr>
<?php 
    }
?>
</table>
<input type="button"  value="添加"  onclick="(location.href=&#39;?ac=add&#39;)">
<?php                
}elseif($act == "edit"){
    $id = $_GET[&#39;type_id&#39;];
    $sql = "select *from  `types` where type_id=$id ";
    $res = mysql_query($sql);
    echo "<form  method=&#39;post&#39;  action=&#39;?ac=edit_ok&#39;>";
    while($arr = mysql_fetch_assoc($res)){
        echo "当前名称:{$arr[&#39;type_name&#39;]}"."<br />";
        echo "新名称:<input type=&#39;text&#39;  name=&#39;n_type_name&#39;  >"."<br />";
        echo "<input type=&#39;hidden&#39;  value={$arr[&#39;type_id&#39;]} name=&#39;id&#39;/>";
    }
    echo "<input type=&#39;submit&#39;  value=&#39;更新&#39;>";
    echo "</form>";
}elseif($act == "edit_ok"){
    $name = trim($_POST[&#39;n_type_name&#39;]);
    $id = $_POST[&#39;id&#39;];
    if(!empty($name)){
        $sql = "update  `types` set type_name=&#39;$name&#39; where type_id=$id";
        mysql_query($sql);
        echo "<script>location.href(&#39;ok.php?act=list&#39;)</script>";
    }else{
        echo "<script>location.href(&#39;ok.php?act=list&#39;)</script>";
    }
}elseif($act == &#39;del&#39;){
    //这里的删除是要把当前分类 和当前的子分类都要删除 所以用到$id%
    $id = $_GET[&#39;type_id&#39;];
    $sql ="delete from `types` where type_p_id like &#39;$id%&#39; ";
    $res = mysql_query($sql);
    if($res){
        echo "<script>location.href(&#39;ok.php?act=list&#39;)</script>";
    }else{
        echo "<script>alert(&#39;删除失败&#39;);</script>";
    }
}
?>
Copy after login

types表:

下面是效果图:

method of classify two

<?php
/*

reader:
    这是自己写的无限极分类实现方法 里面的编辑很简单的(你们懂得。) 就没写了
    没有进行移动操作 小弟能力有限忘大家多多包涵啊
第二种方法:
CREATE TABLE `types` (
  `type_id` int(11) NOT NULL AUTO_INCREMENT,
  `type_name` varchar(20) NOT NULL,
  `type_p_id` varchar(64) NOT NULL,
  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 上层的分类id 如果是当前分类 这个值为 0 
*/
error_reporting(7);
header("Content-type:text/html;charset=utf-8");
//这里先进行操作的判断
$arr = array(&#39;list&#39;,&#39;add&#39;,&#39;del&#39;,&#39;edit&#39;,&#39;addok&#39;,&#39;edit_ok&#39;);
$act= in_array($_GET[&#39;ac&#39;],$arr)?$_GET[&#39;ac&#39;]:$arr[0];
//连接数据库
$conn = mysql_connect("localhost","root","root")or die(&#39;数据库连接失败&#39;);
mysql_select_db("study",$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.=" ";
        }
        $row[&#39;new_type_name&#39;] = $str.$row[&#39;type_name&#39;];
        $types[] = $row;
        getTypes($types,$row[&#39;type_id&#39;],($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][&#39;type_id&#39;]?>"><?php  echo $types[$i][&#39;new_type_name&#39;]?></option>
    <?php
    }
    ?>
    </select><br />
    <input type="submit"  value="添加"/>
</form>
<?php
}elseif($act == "addok"){
    $type_name = $_POST[&#39;type_name&#39;];
    $type_id = $_POST[&#39;type_id&#39;];
    $sql = "insert into `type`(type_name,type_p_id) values (&#39;$type_name&#39;,&#39;$type_id&#39;)";
    $res = mysql_query($sql);
    if(mysql_insert_id()>0){
        echo "<script>location.href=&#39;two.php?act=list&#39;</script>";
    }else{
        echo "<script>alert(&#39;添加失败&#39;);</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[&#39;type_id&#39;]?></td>
    <td><?php echo $arr[&#39;type_name&#39;]?></td>
    <td><?php echo $arr[&#39;type_p_id&#39;]?></td>
    <td ><a href="?ac=edit&type_id=<?php echo $arr[&#39;type_id&#39;];?>">编辑</a> |
        <a href="?ac=del&type_id=<?php echo $arr[&#39;type_id&#39;];?>">删除</a></td>
</tr>
<?php
}
?>
</table>
<input type="button"  value="添加"  onclick="(location.href=&#39;?ac=add&#39;)">
<?php 
}elseif($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[&#39;type_id&#39;];
    //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=&#39;two.php?act=list&#39;</script>";
    }else{
            mysql_query("ROLLBACK");
        echo "<script>alert(&#39;删除失败&#39;);</script>";
    }
}
?>
Copy after login

type表:

 

下面是效果图

写的确实不怎么样啊 还望大家见谅。

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