PHP的开合式多级菜单程序_PHP
# --------------------------------------------------------
# 数据表的结构 'menu'
# --------------------------------------------------------
CREATE TABLE menu (
menu_id int(11) NOT NULL auto_increment,
menu varchar(20) NOT NULL,
menu_grade int(11) NOT NULL,
menu_superior int(11) NOT NULL,
UNIQUE menu_id (menu_id)
);
# -------------------------------------------------
#数据表内的内容,根据具体情况而定
# -------------------------------------------------
INSERT INTO menu VALUES( '1', '计算机', '1', '0');
INSERT INTO menu VALUES( '2', '编程', '2', '1');
INSERT INTO menu VALUES( '3', '网络', '2', '1');
INSERT INTO menu VALUES( '4', 'PHP与MySql', '3', '2');
INSERT INTO menu VALUES( '5', 'C语言', '3', '2');
INSERT INTO menu VALUES( '6', '网页制作', '3', '3');
INSERT INTO menu VALUES( '7', 'TCP、IP协议', '3', '3');
INSERT INTO menu VALUES( '8', '数学', '1', '0');
INSERT INTO menu VALUES( '9', '高等数学', '2', '8');
INSERT INTO menu VALUES( '10', '线性代数', '3', '9');
INSERT INTO menu VALUES( '11', '离散数学', '3', '9');
INSERT INTO menu VALUES( '12', '初等数学', '2', '8');
INSERT INTO menu VALUES( '13', '文学', '1', '0');
INSERT INTO menu VALUES( '14', '中国文学', '2', '13');
INSERT INTO menu VALUES( '15', 'php', '4', '4');
INSERT INTO menu VALUES( '16', 'mysql', '4', '4');
//树型目录结构模板程序
//菜单目录库字段说明:
//menu_id 菜单项目 id
//menu 菜单名称
//menu_grade 菜单等级 1 为主菜单 2 为二级菜单 ........
//menu_superior 上一级菜单 id 号
function my_menu($menu_content,$i,$menu_grade_temp,$menu_superior_temp)
{
global $PHP_SELF;
$temp1=$menu_grade_temp 1;
$menu_superior_temp_array=split("/",$menu_superior_temp);
for ($t=0;$t
{
$menu_array=split("/",$menu_content[$t]);
If(($menu_array[2]==$menu_grade_temp)&&($menu_array[3]==$menu_superior_temp_array[$menu_grade_temp-1]))
{
for($p=1;$p";} //显示目录前的等级箭头
$temp3=$menu_superior_temp_array;
$temp3[$menu_grade_temp]=$menu_array[0];
$temp2=implode("/",$temp3);
if ($menu_array[0]==$menu_superior_temp_array[$temp1-1])
{
$temp5=$temp1-1;
$temp3[$menu_grade_temp]="";
$temp6=implode("/",$temp3);
echo "
$temp6\">$menu_array[1]
";
my_menu($menu_content,$i,$temp1,$temp2);
}
else
{
$temp3[$menu_grade_temp 1]="";
$temp6=implode("/",$temp3);
echo "
$temp6\">$menu_array[1]
";
}
}
}
}
// 连接 MySql 数据库
$db_host="localhost";
$db_user="root";
$db_password="zmxj";
$db_name="joss";
mysql_connect($db_host,$db_user,$db_password);
mysql_select_db($db_name);
//从数据库中取得数据
$query_string="select * from menu order by menu_grade";
$db_data=mysql_query($query_string);
//第一次执行初始化
if ($menu_grade_temp=="")
{
$menu_superior_temp=0;
}
//将所有的信息读入数组,并统计数组个数
$i=0;
while (list($menu_id,$menu,$menu_grade,$menu_superior)=mysql_fetch_row($db_data))
{
$menu_content[$i]=$menu_id."/".$menu."/".$menu_grade."/".$menu_superior;
$i ;
}
my_menu($menu_content,$i,1,$menu_superior_temp);
?>

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