Php unlimited classification-PHP source code

Ec (2); Create Database tutorials and tables: CREATEDATABASE 'sortclass' ultultcharsetutf8; CREATETABLEIFNOTEXISTS 'class' ('cid' mediumint (8) values, 'pid' mediumint (8) unsignedNOTNULL, script ec (2); script

Create Database tutorials and tables:

Create database 'sortclass' default charset utf8;
Create table if not exists 'class '(
'Cid' mediumint (8) unsigned not null auto_increment,
'Pid 'mediumint (8) unsigned not null,
'Cname' varchar (50) not null,
Primary key ('cid '),
KEY 'pid '('pid ')
) ENGINE = MyISAM default charset = utf8;

File Processing example:

Header ("Content-type: text/html; charset = UTF-8 ");
// Connect to the database
$ Link = mysql tutorial _ connect ('localhost', 'root', 'Eric ') or die (mysql_error ());
Mysql_select_db ('sortclass', $ link );
// Unlimited class 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_assoc ($ results )){
$ This-> setNode ($ node ['cid'], $ node ['pid'], $ node ['cname']);
}
}
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 ){
Mysql_query ("insert into $ this-> table ('pid ', 'cname') values (' $ pid ',' $ name')", $ this-> link );
}
Function modNode ($ cid, $ newName ){
Mysql_query ("update $ this-> table set 'cname' = '$ newname' where 'cid' = $ cid", $ this-> link );
}
Function delNode ($ cid ){
$ AllChilds = $ this-> getChilds ($ cid );
$ SQL = '';
If (empty ($ allChilds )){
$ SQL = "delete from $ this-> table where 'cid' = $ cid ";
} Else {
$ SQL = 'delete from '. $ this-> table. 'where'cid' in ('. implode (',', $ allChilds ). ','. $ cid. ')';
}
Mysql_query ($ SQL, $ this-> link );
}
Function moveNode ($ cid, $ topid ){
Mysql_query ("update $ this-> table set 'pid' = $ topid where 'cid' = $ cid", $ this-> link );
}
}
// Function
Function back (){
Echo'