PHP Infinitus Classification_PHP Tutorial

Copy code The code is as follows:

/*========================================================
类名:catalog
功能:无限分级类
方法:
树形显示分类
catalog_show($id) //参数$id 递归调用
流程:找到父分类为0所有根分类-> 一直递归取得所有分类并显示  
添加分类
catalog_add($uid,$name) //$uid 父id //$name 分类名  
流程:依据$uid,在此id下添加一个新子id
删除分类
catalog_del($uid)//参数 $uid 数要删除的分类
修改分类
catalog_set($id,$name) //参数 $id 要修改的分类 //参数 $name 新的分类名
变量:
$config //数据库信息-> host,user,pass,dbname
$catalog_dbname //分类数据库名
数据库:
catalog_id //分类的自然序号
catalog_uid //分类的父分类
catalog_name //分类名
catalog_path_number //亲缘树数字形式 0:1:2
catalog_path_char //亲缘树字符形式 分类1:分类1.1:分类1.1.1
参照文章 http://www.phpchina.com/12823/viewspace_4468.html
========================================================*/
class catalog{
var $config;
var $catalog_dbname;
var $links;
private function connect(){
$this->links = mysql_connect($this->config['host'],$this->config['user'],$this->config['pass']) or die("错误: 第".__LINE__."行
".mysql_error());
mysql_select_db($this->config['dbname'],$this->links);
mysql_query("SET NAMES gb2312");
}
function catalog_show($uid = 0){
$this->connect();
$sql = "Select * FROM ".$this->catalog_dbname. "
Where catalog_uid = ". $uid ."
orDER BY catalog_id ";
$result = mysql_query($sql,$this->links) or die("错误: 第".__LINE__."行
".mysql_error());
if(mysql_num_rows($result) > 0){
while ($row = mysql_fetch_assoc($result)){  
if($this->sun_catalog($row['catalog_id'])){//判断有没有子分类
$cata_img = "";
}else{
$cata_img = "";
}
$path = explode(":",$row['catalog_path_number']);
if(count($path) > 1){
for($i=1;$i$path_img .= "";
}
}
echo $path_img.$cata_img;
echo "";
echo $row['catalog_name']."
";
$path_img = "";
if($this->sun_catalog($row['catalog_id'])){  
$hidden_div = "style='display:none'";  
echo "

";  
$this->catalog_show($row['catalog_id']);
echo "

";
}
}
}
}
private function sun_catalog($uid){//Determine whether there is a subcategory
$sql = "Select * FROM ".$ this->catalog_dbname. "
Where catalog_uid = ". $uid ."
orDER BY catalog_id ";
$result = mysql_query($sql,$this->links) or die("Error : Line ".__LINE__."
".mysql_error());
if(mysql_num_rows($result) > 0){
return true;
}else{
return false;
}
}
function catalog_add($uid,$name){
//Get the affinity tree of the parent id
$this->connect();
$ sql = "Select * FROM ".$this->catalog_dbname."
Where catalog_id = '".$uid."'";
$result = mysql_query($sql,$this->links)
or die("Error: Line ".__LINE__."
".mysql_error());
$row = mysql_fetch_assoc($result);
$fid_path_number = $row['catalog_path_number '];//Digital affinity tree of id
$fid_path_char = $row['catalog_path_char'];//Character affinity tree of id
//Insert data Insert row first -> Then find the latest inserted id , Modify based on this id
$sql = "Insert INTO ".$this->catalog_dbname."(catalog_uid,catalog_name)
VALUES(".$uid.",'".$name." ')";
$result = mysql_query($sql,$this->links)
or die("Error: Line ".__LINE__."
".mysql_error());
$catalog_id = mysql_insert_id();//Get your own id
$catalog_path_number = $fid_path_number.":".$catalog_id;//Get your own digital affinity number
$catalog_path_char = $fid_path_char.": ".$name;//Get your own character affinity number
$sql = "Update '".$this->catalog_dbname."'
SET
catalog_path_number = '".$catalog_path_number."' ,
catalog_path_char = '".$catalog_path_char."'
Where
catalog_id = ".$catalog_id;
mysql_query($sql,$this->links)
or die(" Error: Line ".__LINE__."
".mysql_error());
}
function catalog_del($id){
$this->connect();
$ sql = "Delete FROM ".$this->catalog_dbname."
Where catalog_id = ".$id;
mysql_query($sql,$this->links)
or die("Error: Line ".__LINE__."
".mysql_error());
}
function catalog_set($id,$name){
$this->connect();
$sql = "Update ".$this->catalog_dbname."
SET
catalog_name = '".$name."'
Where
catalog_id = ".$id;
mysql_query ($sql,$this->links)
or die("Error: Line ".__LINE__."
".mysql_error());
}
}
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http://www.bkjia.com/PHPjc/318618.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/318618.htmlTechArticleCopy the code as follows: ?php /*=============== ======================================= Class name: catalog Function: Unlimited hierarchical classes Method: Tree display classification catalog_show($id)//Parameters...