我的代碼和表格多級菜單的工作給出如下與PHP MYSQL和foreach語句
TABLES
menu
====
m_id menu_name parent_menu_id menu_order menu_url status
1 M1 0 1 # 1
2 M2 0 2 # 1
3 S1 1 1 # 1
4 S2 1 2 # 1
user_rights
===========
user_id rights
1 1,2,3,4
2 1,2,3
CODE
<?php
$get_user_id = "1"; // user id will be 1 or 2 or any id from user table
mysql_connect("localhost", "root", "password") or die(mysql_error());
mysql_select_db("booksdb") or die(mysql_error());
function getMenuRights($get_user_id) {
$get_user_id = intval($get_user_id);
$get_access_query = mysql_query("SELECT access FROM user_rights where user_id='".$get_user_id."'");
$fetch_access_list = mysql_fetch_row($get_access_query);
$get_access_list = $fetch_access_list[0];
return $get_access_list;
}
function getUserMainMenus($get_user_id) {
$get_user_id = intval($get_user_id);
$rights = getMenuRights($get_user_id);
$get_main_menu_query = mysql_query("SELECT * FROM menu where m_id IN ($rights) and parent_menu_id='0' order by menu_order");
while ($row = mysql_fetch_assoc($get_main_menu_query)) {
$results[] = $row;
}
return $results;
}
function getUserChildMenu($parent_menu_id, $get_user_id) {
$parent_menu_id = intval($parent_menu_id);
$get_user_id = intval($get_user_id);
$rights = getMenuRights($get_user_id);
$get_sub_menu = mysql_query("SELECT * FROM menu where parent_menu_id='".$parent_menu_id."' AND m_id IN ($rights)");
while($row = mysql_fetch_assoc($get_sub_menu)) {
$results[] = $row;
}
return $results;
}
?>
<div id='cssmenu'>
<ul>
<?php foreach (getUserMainMenus($get_user_id) as $get_main_menu): ?>
<li class='has-sub'><a href='#'><span><?=$get_main_menu['menu_name']; ?></span></a>
<ul>
<?php foreach (getUserChildMenu($get_main_menu['m_id'], $get_user_id) as $sub_menu): ?>
<li class='has-sub'><a href='<?=$sub_menu['menu_url']; ?>'><span><?=$sub_menu['menu_name']; ?></span></a>
</li>
<?php endforeach; ?>
</ul>
</li>
<?php endforeach; ?>
</ul>
</div>
上面的代碼工作正常,但它顯示了一些錯誤。
Undefined variable: results in phpfilename.php on line 21(and 32)
此外,我必須檢查每個菜單和子菜單之前是否有值,然後顯示子菜單。
我怎麼能這樣做?
換句話說,在我的菜單和子菜單開始之前,我需要檢查值然後顯示。如果有值,則顯示子菜單。如果沒有單獨顯示主菜單。
任何幫助。
感謝, Kimz
你應該申報'$ results'變量'$結果= array();'在使用它之前的while循環之上。 – Rikesh
如何在foreach語句之前檢查if條件?我mena如果值是有顯示子菜單其他離開它 – user3350885