复制代码 代码如下:
/*========================================================
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";
}
}
echo $path_img.$cata_img;
echo "";
echo $row['catalog_name']."
";
$path_img = "";
if($this->sun_catalog($row['catalog_id'])){
$hidden_div = " style="max-width:90%";
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,$this->links) or die("Error: No. ".__LINE__." line
".mysql_error()) ;
if(mysql_num_rows($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'];//The numeric affinity tree of id
$fid_path_char = $row['catalog_path_char'];//The character affinity tree of id
//Insert data Insert the row first -> Then find the latest inserted id, in 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 numeric 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());
}
}
?>
The above introduces the Infinitus China Co., Ltd. php Infinitus classification, including the content of Infinitus China Co., Ltd. I hope it will be helpful to friends who are interested in PHP tutorials.

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PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.


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