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2006-12-31 21:08:57
即然是PHP,数据表当然是 MYSQL:在应用之前,先在mysql中建立数据表.b_mtype.其中的字段包括:typeid,typename,parentid,paretnstr,rootid,child,orders.
具体PHP程序如下:
$ToDo=$_GET["ToDo"];
switch($ToDo)
{
case "add":
echo add();
break;
case "edit":
echo edit();
break;
case "saveadd":
echo saveadd();
break;
case "saveedit":
echo saveedit();
break;
case "del":
echo del();
break;
default:
?>
|
function add(){
// global $db,$postnum,$editid;
$editid=$_REQUEST["editid"];
$query=mysql_query("select typeid from b_mtype order by typeid desc limit 1");
while($arr=mysql_fetch_array($query)){
if (!$arr["typeid"]){
$postnum=1;
}else{
$postnum=$arr["typeid"]+1;
}
if(!$postnum) $postnum=1;
}
?>
function saveadd(){
$ntid =$_REQUEST["newtypeid"];
$tn =$_REQUEST["typename"];
$btype =$_REQUEST["btype"];
//echo $btype;
if ($ntid=="" or $tn=="")
{
die( "参数有误,请重新填写." );
}
if ($btype!=0){
$result=mysql_query("select rootid,typeid,depth,orders,parentstr from b_mtype where typeid='$btype'");
$aa=mysql_fetch_array($result);
$rootid=$aa['rootid'];
//echo "aaaaaaaaaaa";
$parentid=$aa['typeid'];
$depth=$aa['depth'];
$orders=$aa['orders'];
$parentstr=$aa['parentstr'];
//echo $rootid;
if(($aa["depth"]+1)>20){ die("本分类限制最多只能有20级分类"); }
}
if($ntid == $btype)
{
die("您所指定的typeid值重复。");
}
if($btype!=0){
$depth=$depth+1;
$rootid=$rootid;
$orders =$ntid;
$parentid =$btype;
//$child = $child;
if ($parentstr=="0"){
$parentstr=$btype;
}else{
$parentstr=$parentstr.",".$btype;
}
}else{
$depth=0;
$rootid=$ntid;
$orders=1;
$parentid=0;
$child=0;
$parentstr=0;
}
$query=mysql_query("insert into b_mtype values('$ntid','$tn','$parentid','$parentstr','$depth','$rootid','','$orders','')") ;
if ($btype!=0)
{
if ($depth>0)
{
//当上级分类深度大于0的时候要更新其父类（或父类的父类）的版面数和相关排序
for ($i=1;$i<=$depth;$i++){
//更新其父类版面数
if ($parentid!=""){
$query=mysql_query("update b_mtype set child=child+1 where typeid='$parentid'");
}
//得到其父类的父类的版面ID
$result=mysql_query("select parentid from b_mtype where typeid='$parentid'");
$par=mysql_fetch_array($result);
if ($par['parentid']!=""){
$parentid=$par['parentid'];
}
//当循环次数大于1并且运行到最后一次循环的时候直接进行更新
if ($i==$depth && $parentid!=""){
$query=mysql_query("update b_mtype set child=child+1 where typeid='$parentid'");
}
}//for循环结果
//更新该版面排序以及大于本需要和同在本分类下的版面排序序号
$query=mysql_query("update b_mtype set orders=orders+1 where rootid='$rootid' and orders>'$orders'");
//$orders1=$orders+1;
//echo "orders1=".$orders1;
$query=mysql_query("update b_mtype set orders='$orders'+1 where typeid='$ntid'");
}else{
//当上级分类深度为0的时候只要更新上级分类版面数和该版面排序序号即可
$query=mysql_query("update b_mtype set child=child+1 where typeid='$btype'");
$result=mysql_query("select max(orders) from b_mtype where typeid='$ntid'");
$ord=mysql_fetch_array($result);
$query=mysql_query("update b_mtype set orders='$ord[0]'+1 where typeid='$ntid'");
}
echo "类别填加成功";
}
}
?>
function edit(){
//global $db,$editid,$tn,$arr;
$editid=$_REQUEST["editid"];
$result=mysql_query("select * from b_mtype where typeid='$editid'");
$tn=mysql_fetch_array($result);
?>
编辑类别：
类别名称
">
所属类别
所属类别不能指定为当前类别
所属类别不能指定为当前版面的下属类别
}
?>
function saveedit(){
//global $db,$aa,$bb,$cc,$dd,$ee,$ff,$gg,$ii,$jj,$kk,$ll,$mm,$nn,$qq,$rr;
$editid=$_REQUEST["editid"];
$btype=$_REQUEST["class"];
$tn=$_REQUEST["typename"];
if($editid == $btype ){ die ("所属论坛不能指定自己"); }
$result=mysql_query("select * from b_mtype where typeid='$editid'");
$aa=mysql_fetch_array($result);
$newtypeid=$aa["typeid"];
$typename=$aa["typename"];
$parentid=$aa["parentid"];
$iparentid=$aa["parentid"];
$parentstr=$aa["parentstr"];
$depth = $aa["depth"];
$rootid = $aa["rootid"];
$child = $aa["child"];
$orders = $aa["orders"];
////判断所指定的类别是否其下属类别
if ($parentid ==0){
if ($btype!= 0) {
$result=mysql_query("select rootid from b_mtype where typeid='$btype'");
$b=mysql_fetch_array($result);
if ($rootid == $bb['rootid']) {
die("您不能指定该版面的下属论坛作为所属论坛11");
}
}
}else{
$result=mysql_query("select typeid from b_mtype where parentstr like '%$parentstr%' and typeid='$btype'");
$cc=mysql_fetch_array($result);
if ($cc[0]){
die("您不能指定该版面的下属论坛作为所属论坛2");
}
}
if ($parentid ==0){
$parentid=$editid;
$iparentid=0;
}
mysql_query("update b_mtype set typename='$tn',parentid='$btype' where typeid='$editid'");
$result1=mysql_query("select max(rootid) from b_mtype");
$ss=mysql_fetch_array($result1);
$maxrootid=$ss["rootid"]+1;
if (!$maxrootid){ $maxrootid=1;}
//假如更改了所属类别
//需要更新其原来所属版面信息，包括深度、父级ID、版面数、排序、继承版主等数据
//需要更新当前所属版面信息
//继承版主数据需要另写函数进行更新--取消，在前台可用typeid in parentstr来获得
if ($parentid != $btype && !($iparentid==0 && $btype==0)) {
//如果原来不是一级分类改成一级分类
//echo "ggg";
if ($iparentid>0 && $btype==0)
{
echo "第一部分";
//更新当前版面数据
mysql_query("update b_mtype set depth=0,orders=0,rootid='$editid',parentid=0,parentstr='0' where typeid='$newtypeid'");
$parentstr=$parentstr .",";
$result=mysql_query("select count(*) from b_mtype where parentstr like '%$parentstr%'");
$dd=mysql_fetch_array($result);
$postcount=$dd[0];
echo "postcount=".$postcount;
if (empty($postcount))
{
$postcount=1;
}else{
$postcount=$postcount+1;
}
//更新其原来所属类别版面数
mysql_query("update b_mtype set child=child-'$postcount' where typeid='$iparentid'");
//更新其原来所属类别数据，排序相当于剪枝而不需考虑
for ($i=1;$i<=$depth;$i++)
{
////得到其父类的父类的版面ID
$result2=mysql_query("select parentid from b_mtype where typeid='$iparentid'");
$ee=mysql_fetch_array($result2);
if (!$ee[0]){
$iparentid=$ee[0];
mysql_query("update b_mtype set child=child-'$postcount' where typeid='$iparentid'");
}
} //for end
if ($child >0){ //m1
//更新其下属类别数据
//有下属类别，排序不需考虑，更新下属类别深度和一级排序ID(rootid)数据
//更新当前版面数据
$i=0;
$query=mysql_query("select * from b_mtype where parentstr like '%$parentstr%'");
while($arr=mysql_fetch_array($query)){
$i++;
$mParentStr=strtr($arr['parentstr'],$parentstr," ");
mysql_query("update b_mtype set depth=depth-'$depth',rootid='$maxrootid',parentstr='$mParentStr' where typeid='$arr[typeid]");
}
} //m1 end
}elseif ($iparentid > 0 && $btype >0) {
echo "第二部分";
//将一个分类别移动到其他分类别下
//获得所指定的类别的相关信息
$result=mysql_query("select * from b_mtype where typeid='$btype'");
$gg=mysql_fetch_array($result);
//得到其下属版面数
$parentstr=$parentstr .",";
$iparentstr=$parentstr.$editid;
echo $iparentstr;
$result1=mysql_query("select count(*) from b_mtype where parentstr like '%$iparentstr%'");
$ii=mysql_fetch_array($result1);
$postcount=$ii[0];
echo "postcount1=".$postcout;
if (empty($postcount)){ $postcount=1; }
//在获得移动过来的版面数后更新排序在指定类别之后的类别排序数据
$query=mysql_query("update b_mtype set orders=orders+'$postcount'+1 where rootid='$gg[rootid]' and orders>'$gg[orders]'");
//更新当前版面数据
If($gg[parentstr]=="0") {
// $idepth=$gg[depth]+1;
// $iorders=$gg[orders]+1;
mysql_query("update b_mtype set depth='$gg[depth]'+1,orders='$gg[orders]'+1,rootid='$gg[rootid]',parentid='$btype',parentstr='$gg[typeid]' where typeid='$newtypeid'");
}Else{
$aparentstr=$gg['parentstr'].",".$gg['typeid'];
$idepth=$gg['depth']+1;
$iorders=$gg['orders']+1;
mysql_query("update b_mtype set depth='$idepth',orders='$iorders',rootid='$gg[rootid]',parentid='$btype',parentstr='$aparentstr' where typeid='$editid'");
}
$i=1;
// echo "ghh";
//如果有则更新下属版面数据
//深度为原有深度加上当前所属类别的深度
$iparentstr=$parentstr.$newtypeid;
$query=mysql_query("select * from b_mtype where parentstr like '%$iparentstr%' order by orders");
while($arr=mysql_fetch_array($query)){ // m2
$i++;
If ($gg['parentstr']=="0") {
$iParentStr=$gg['typeid'].",".strtr($arr['parentstr'],$parentstr," ");
}Else{
$iParentStr=$gg["parentstr"] .",".$gg["typeid"] . "," . strtr($arr['parentstr'],$parentstr," ");
}
echo "iParentStr=".$iParentStr;
$query=mysql_query("update b_mtype set depth=depth+'$gg[depth]'-'$depth'+1,orders='$gg[orders]'+'$i',rootid='$gg[rootid]',parentstr='$iParentStr' where typeid='$arr[typeid]'");
} ///m2 end
$parentid=$btype;
if ($rootid==$gg['rootid']) { ///m3
//在同一分类下移动
//更新所指向的上级类别版面数，i为本次移动过来的版面数
//更新其父类版面数
$query=mysql_query("update b_mtype set child=child+'$i' where (! parentid=0) and typeid='$parentid'");
for ($k=1;$k<=$gg['depth'];$k++){
//得到其父类的父类的版面ID
$result=mysql_query("select parentid from b_mtype where (! parentid=0) and typeid='$parentid'");
$vv=mysql_fetch_array($result);
if ($vv[0]){
$parentid=$vv[0];
//更新其父类的父类版面数
mysql_query("update b_mtype set child=child+'$i' where (! parentid=0) and typeid='$parentid'");
}
} // for end
//更新其原父类版面数
mysql_query("update b_mtype set child=child-'$i' where (! parentid=0) and typeid='$iparentid'");
//更新其原来所属类别数据
for ($k=1;$k<=$depth;$k++){
//得到其原父类的父类的版面ID
$result1=mysql_query("select parentid from b_mtype where (! parentid=0) and typeid='$iparentid'");
$zz=mysql_fetch_array($result1);
if ($zz[0]){
$iparentid=$zz[0];
//更新其原父类的父类版面数
mysql_query("update b_mtype set child=child-'$i' where (! parentid=0) and typeid='$iparentid'");
}
}//for end
}else{ ////m3 end
echo "ccc";
//更新所指向的上级类别版面数，i为本次移动过来的版面数
//更新其父类版面数
mysql_query("update b_mtype set child=child+'$i' where typeid='$parentid'");
for ($k=1;$k<=$gg["depth"];$k++){
//得到其父类的父类的版面ID
$result2=mysql_query("select parentid from b_mtype where typeid='$parentid'");
$yy=mysql_fetch_array($result2);
if ($yy[0]){
$parentid=$yy[0];
//更新其父类的父类版面数
mysql_query("update b_mtype set child=child+'$i' where typeid='$parentid'");
}
} //for end
//更新其原父类版面数
mysql_query("update b_mtype set child=child-'$i' where typeid='$iparentid'");
//更新其原来所属类别数据
for ($k=1;$k<=$depth;$k++){
//得到其原父类的父类的版面ID
$query=mysql_query("select parentid from b_mtype where typeid='$iparentid'");
while($arr=mysql_fetch_array($query))
{
if ($arr[0]){
$iparentid=$arr[0];
//更新其原父类的父类版面数
mysql_query("update b_mtype set child=child-'$i' where typeid='$iparentid'");
}
}
} //for end
} ///m3 end
}else{
echo "第三种情况";
//如果原来是一级类别改成其他类别的下属类别
//得到所指定的类别的相关信息
$result=mysql_query("select * from b_mtype where typeid='$btype'");
$gg=mysql_fetch_array($result);
echo $rootid;
$result1=mysql_query("select count(*) from b_mtype where rootid='$rootid'");
$qq=mysql_fetch_array($result1);
$postcount=$qq[0];
//更新所指向的上级类别版面数，i为本次移动过来的版面数
$parentid=$btype;
//更新其父类版面数
mysql_query("update b_mtype set child=child+'$postcount' where typeid='$parentid'");
for ($k=1;$k<=$gg['depth'];$k++){
//得到其父类的父类的版面ID
$result2=mysql_query("select parentid from b_mtype where typeid='$parentid'");
$rr=mysql_fetch_array($result2);
if ($rr[0]){
$parentid=$rr[0];
//更新其父类的父类版面数
mysql_query("update b_mtype set child=child+'$postcount' where typeid='$parentid'");
}
} ///for end
//在获得移动过来的版面数后更新排序在指定类别之后的类别排序数据
mysql_query("update b_mtype set orders=orders+'$postcount'+1 where rootid='$gg[rootid]' and orders>'$gg[orders]'");
$i=0;
$query=mysql_query("select * from b_mtype where rootid='$rootid' order by orders");
while($arr=mysql_fetch_array($query))
{
$i++;
if ($arr['parentid'] ==0)
{
if ($gg['parentstr'] =="0")
{
$parentstr=$gg['typeid'];
}else{
$parentstr=$gg['parentstr'] .",".$gg['typeid'];
}
mysql_query("update b_mtype set depth=depth+'$gg[depth]'+1,orders='$gg[orders]'+'$i',rootid='$gg[rootid]',parentstr='$parentstr',parentid='$btype' where typeid='$arr[typeid]'");
}else{
if ($gg['parentstr'] =="0"){
$parentstr=$gg['typeid'] ."," . $arr['parentstr'];
}else{
$parentstr=$gg['parentstr'] .",".$gg['typeid'] .",". $arr['parentstr'];
}
mysql_query("update b_mtype set depth=depth+'$gg[depth]'+1,orders='$gg[orders]'+'$i',rootid='$gg[rootid]',parentstr='$parentstr' where typeid='$arr[typeid]'");
}
}///while end
}//else end
echo "
类别修改成功！
";
}
}
?>
function del(){
////更新其上级版面类别数，如果该类别含有下级类别则不允许删除
$editid=$_REQUEST["editid"];
$result=mysql_query("select parentstr,child,depth from b_mtype where typeid='$editid'");
$aa=mysql_fetch_array($result);
if ($aa[0]!="") {
if ($aa[1]>0){
die("该类别含有下属类别，请删除其下属类别后再进行删除本类别的操作");
}
//如果有上级版面，则更新数据
if ($aa[2]>0){
echo $aa[0];
$query=mysql_query("update b_mtype set child=child-1 where typeid in ($aa[0])");
}
$query=mysql_query("delete from b_mtype where typeid='$editid'");
}
//echo $editid;
//echo $arr[0];
echo "类别删除成功！";
}
?>
