php + mysql database unlimited classification code

php tutorial + mysql tutorial database tutorial unlimited classification code This paragraph php infinite classification code more complete management of the database includes mysql, add, delete, edit, move the function, but also provide the database sql table structure.

//Connect to the database
$ link = mysql_connect ('localhost', 'root', '') or die (mysql_error ());
mysql_select_db ('class', $ link) or die (mysql_error ());
mysql_query ("set names gbk");
// Unlimited classification library

class sortclass {

var $ data = array ();
var $ child = array (-1 => array ());
var $ layer = array (-1 => - 1);
var $ parent = array ();
var $ link;
var $ table;
function sortclass ($ link, $ table) {
$ this-> setnode (0, -1, 'top node');
$ this-> link = $ link;
$ this-> table = $ table;
$ node = array ();
$ results = mysql_query ("select * from $ this-> table", $ this-> link);

while ($ node = mysql_fetch_array ($ results)) {
$ this-> setnode ($ node ['id'], $ node ['f_id'], $ node ['name']);
}
}
function setnode ($ id, $ parent, $ value) {
$ parent = $ parent? $ parent: 0;
$ this-> data [$ id] = $ value;
$ this-> child [$ id] = array ();
$ this-> child [$ parent] [] = $ id;
$ this-> parent [$ id] = $ parent;
$ this-> layer [$ id] =! isset ($ this-> layer [$ parent])? 0: $ this-> layer [$ parent] + 1;
}
function getlist (& $ tree, $ root = 0) {
foreach ($ this-> child [$ root] as $ key => $ id) {
$ tree [] = $ id;
if ($ this-> child [$ id]) $ this-> getlist ($ tree, $ id);
}
}
function getvalue ($ id) {return $ this-> data [$ id];}
function getlayer ($ id, $ space = false) {
return $ space? str_repeat ($ space, $ this-> layer [$ id]): $ this-> layer [$ id];
}
function getparent ($ id) {return $ this-> parent [$ id];}
function getparents ($ id) {
while ($ this-> parent [$ id]! = -1) {
$ id = $ parent [$ this-> layer [$ id]] = $ this-> parent [$ id];
}
ksort ($ parent);
reset ($ parent);
return $ parent;
}
function getchild ($ id) {return $ this-> child [$ id];}
function getchilds ($ id = 0) {
$ child = array ($ id);
$ this-> getlist ($ child, $ id);
return $ child;
}
function addnode ($ name, $ pid) {
// echo "insert into $ this-> table (` f_id`, `name`) values ​​('$ pid', '$ name')"; exit;
mysql_query ("insert into $ this-> table (` f_id`, `name`) values ​​('$ pid', '$ name')", $ this-> link);

}
function modnode ($ cid, $ newname) {
mysql_query ("update $ this-> table set` name` = '$ newname' where `id` = $ cid", $ this-> link);
}
function delnode ($ cid) {
$ allchilds = $ this-> getchilds ($ cid);
$ sql = '';
if (empty ($ allchilds)) {
$ sql = "delete from $ this-> table where id = $ cid";
} else {
$ this-> table. 'where `id` in (' .implode (',', $ allchilds). ','. $ cid. ')';
}
mysql_query ($ sql, $ this-> link);
}
function movenode ($ cid, $ topid) {
mysql_query ("update $ this-> table set` f_id` = $ topid where `id` = $ cid", $ this-> link);
}
}
//function
function back () {
echo '<script language = "webpage effects"> window.location.href = "news.class.php?" + new date (). gettime (); </ script>';
exit
}
// Generate select
function makeselect ($ array, $ formname) {
global $ tree;
$ select = '<select name = "'. $ formname. '">';
foreach ($ array as $ id) {
$ tree -> getlayer ($ id, '| -'). $ tree-> getvalue ($ id). "</ option> ";
}
return $ select. '</ select>';
}
$ tree = new sortclass ($ link, '`p_newsclass`');
$ op =! empty ($ _ post ['op'])? $ _post ['op']: $ _get ['op'];
if (! empty ($ op)) {

if ($ op == 'add') {
$ tree-> addnode ($ _ post ['cname'], $ _ post ['pid']);
back ();
}

if ($ op == 'mod') {
$ tree-> modnode ($ _ post ['cid'], $ _ post ['cname']);
back ();
}

if ($ op == 'del') {
$ tree-> delnode ($ _ get ['cid']);
back ();
}

if ($ op == 'move') {
$ tree-> movenode ($ _ post ['who'], $ _ post ['to']);
back ();
}
}
$ category = $ tree-> getchilds ();
?>
<style type = "text / css tutorial">
body {font-size: 12px;}
ul {list-style: none;}
a {cursor: pointer;}
</ style>
<script language = "webpage effects">
function $ (e) {return document.getelementbyid (e);}
function mod (cid) {
$ ('cid'). value = cid;
$ ('op'). value = 'mod';
$ ('name'). style.border = '1px solid red';
}
</ script>
<form action = "" method = "post">
Name: <input type = "text" id = "name" name = "cname" /> Add to: <? = Makeselect ($ category, 'pid')?> <br />
<input type = "hidden" id = "op" name = "op" value = "add" />
<input type = "hidden" id = "cid" name = "cid" />
<input type = "submit" value = "submit" />
</ form>
<h3> Move Categories </ h3>
<form action = "" method = "post">
<? = makeselect ($ category, 'who')?> gt; Move to: <? = makeselect ($ category, 'to')?>
<input type = "hidden" id = "op" name = "op" value = "move" />
<input type = "submit" value = "submit" />
</ form>
<ul>
<? php
foreach ($ category as $ id) {
$ tree-> getlayer ($ id, '| -'). $ tree-> getvalue ($ id). '<a href = "time.php? op = del & cid ='. $ id . ""> del </a> <a onclick="mod('.$id.')"> edit </a> </ li> ';
}
?>
</ ul>
// Use phpmyadmin to import this database ok.
- phpmyadmin sql dump
- version 3.2.4
- http://www.jzread.com
-
- host: localhost
- Generated on: 2010-07-02 03:02
- Server Version: 5.1.41
php version: 5.3.1

set sql_mode = "no_auto_value_on_zero";

/ *! 40101 set @old_character_set_client = @@ character_set_client * /;
/ *! 40101 set @old_character_set_results = @@ character_set_results * /;
/ *! 40101 set @old_collation_connection = @@ collation_connection * /;
/ *! 40101 set names utf8 * /;

-
- Database: `class`
-

- ------------------------------------------------ --------

-
- The structure of the table `p_newsclass`
-

create table if not exists `p_newsclass` (
`id` int (7) not null auto_increment,
`f_id` int (7) not null,
`name` varchar (255) not null,
primary key (`id`)
) engine = innodb default charset = utf8 auto_increment = 10;

-
- Dump the data in the table `p_newsclass`
-

insert into `p_newsclass` (` id`, `f_id`,` name`) values
(3, 0, 'China'),
(4, 3, 'Fujian'),
(5, 4, 'Longyan City'),
(7, 4, 'Xiamen City'),
(9, 5, 'Zhangping City');

/ *! 40101 set character_set_client = @ old_character_set_client * /;
/ *! 40101 set character_set_results = @ old_character_set_results * /;
/ *! 40101 set collation_connection = @ old_collation_connection * /;