データ表参照:
代:------------------------------------------ --------------------------------------
CREATE TABLE `mf_sort` (
`sortid` SMALLINT( 3 ) UNSIGNED NOT NULL AUTO_INCREMENT ,
`main` TINYINT( 2 ) UNSIGNED NOT NULL ,
`parentid` SMALLINT( 3 ) UNSIGNED NOT NULL ,
`layer` SMALLINT( 3 ) UNSIGNED NOT NULL ,
`orders` TINYINT( 2 ) UNSIGNED NOT NULL 、
`sort` VARCHAR( 100 ) NOT NULL 、
PRIMARY KEY ( `sortid` ) 、
INDEX ( `main` 、 `parentid` 、 `layer` 、 `orders` )
);
-- -------------------------------------------------- ----------------------------
关键の関数
PHP代:-------------- -------------------------------------------------- ----------------
function get_main_layer_orders($parentid)
{
global $x_db;
$sql = "select `main`、`layer`、`orders` ";
$sql .= "`mf_sort` から ";
$sql .= "where `postid`='$parentid'";
$x_db->exec($sql);
$data = $x_db->get_data ();
$layer = $data[0]['layer']+1;
$main = $data[0]['main'];
$orders = $data[0]['orders'];
$sql = "select `sortid` from `mf_sort` ";
$sql .= "where `parentid`='$parentid'";
$x_db->exec($sql);
$n = $x_db ->n;
if ($n>0)
{
$lastid = $parentid;
get_lastid($lastid);
$sql = "mf_sort` から `orders` を選択 ";
$sql .= " where `sortid`='$lastid'";
$x_db->exec($sql);
$data = $x_db->get_data();
$orders = $data[0][0];
$sql = "update `mf_sort` ";
$sql .= "set `orders`=`orders`+1 ";
$sql .= "where `orders`>$orders および `main`='$main '";
$x_db->exec($sql);
$orders = $orders + 1;
return array($main, $layer, $orders);
}