使用mysql结果从多维PHP数组构建树
我想创建一个函数，该函数递归地从具有未知级别和未知元素计数的多维数组生成树视图 这是数据库文件使用mysql结果从多维PHP数组构建树,php,mysql,arrays,recursion,multidimensional-array,Php,Mysql,Arrays,Recursion,Multidimensional Array,我想创建一个函数，该函数递归地从具有未知级别和未知元素计数的多维数组生成树视图 这是数据库文件 -- -- Table structure for table `accounts_tree` -- CREATE TABLE `accounts_tree` ( `id` bigint(20) NOT NULL, `parent_id` bigint(20) DEFAULT '0', `final_acc_id` bigint(20) NOT NULL, `Code` varcha
--
-- Table structure for table `accounts_tree`
--
CREATE TABLE `accounts_tree` (
`id` bigint(20) NOT NULL,
`parent_id` bigint(20) DEFAULT '0',
`final_acc_id` bigint(20) NOT NULL,
`Code` varchar(255) DEFAULT NULL,
`name_a` varchar(255) DEFAULT NULL,
`name_e` varchar(255) DEFAULT NULL,
`nature` tinyint(1) DEFAULT '0',
`currency_id` bigint(20) NOT NULL DEFAULT '0',
`currency_rate` varchar(200) DEFAULT NULL,
`match_date` date DEFAULT NULL,
`notes` text,
`created` datetime NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
--
-- Dumping data for table `accounts_tree`
--
INSERT INTO `accounts_tree` (`id`, `parent_id`, `final_acc_id`, `Code`, `name_a`, `name_e`, `nature`, `currency_id`, `currency_rate`, `match_date`, `notes`, `created`) VALUES
(1, 0, 1, '1', 'folder 1', 'budget', 0, 1, '1', NULL, NULL, '2017-12-16 00:00:00'),
(2, 0, 1, '1', 'folder 2', 'budget2', 0, 1, '1', NULL, NULL, '2017-12-16 00:00:00'),
(3, 1, 1, '1', 'sub 1-1', 'balance sheet', 0, 1, '1', NULL, NULL, '2017-12-16 00:00:00'),
(4, 2, 1, '1', 'sub 2-1', 'balance sheet', 0, 1, '1', NULL, NULL, '2017-12-16 00:00:00'),
(5, 3, 1, '1', 'Sub 1-1-1', 'balance sheet', 0, 1, '1', NULL, NULL, '2017-12-16 00:00:00'),
(6, 0, 1, '3', 'folder 3', 'balance sheet', 0, 1, '1', NULL, NULL, '2017-12-16 00:00:00'),
(7, 5, 1, '3', 'sub 1-1-1-1', 'balance sheet', 0, 1, '1', NULL, NULL, '2017-12-16 00:00:00');
$query = "SELECT * FROM `accounts_tree`";
$result = $db->query($query);
$output = array();
while ($row = $db->fetch_assoc($result)) {
$sub_data["id"] = $row["id"];
$sub_data["name"] = $row["name_a"];
$sub_data["parent_id"] = $row["parent_id"];
$data[] = $sub_data;
}
foreach ($data as $key => &$value) {
$output[$value["id"]] = &$value;
}
foreach ($data as $key => &$value) {
if ($value["parent_id"] && isset($output[$value["parent_id"]])) {
$output[$value["parent_id"]]["nodes"][] = &$value;
}
}
foreach ($data as $key => & $value ) {
if ($value["parent_id"] && isset($output[$value["parent_id"]])) {
unset($data[$key]);
}
}
Array
(
[0] => Array
(
[id] => 1,
[name] => "folder 1",
[parent_id] => 0,
[nodes] => Array
(
[0] => Array
(
[id] => 3,
[name] => "sub 1-1",
[parent_id] => 1,
[nodes] => Array
(
[0] => Array
(
[id] => 5,
[name] => "Sub 1-1-1",
[parent_id] => 3,
[nodes] => Array
(
[0] => Array
(
[id] => 7,
[name] => "sub1-1-1-1",
[parent_id] => 5
)
)
)
)
)
)
),
[1] => Array
(
[id] => 2,
[name] => "folder 2",
[parent_id] => 0,
[nodes] => Array
(
[0] => Array
(
[id] => 4,
[name] => "sub 2-1",
[parent_id] => 2
)
)
),
[5] => Array
(
[id] => 6,
[name] => "folder 3",
[parent_id] => 0
)
);
谢谢解释可以在内联评论中找到。此函数提供精确的所需输出。还要注意我为设置
$resultsetArray
(
[0] => Array
(
[id] => 1
[name] => folder 1
[parent_id] => 0
[nodes] => Array
(
[0] => Array
(
[id] => 3
[name] => sub 1-1
[parent_id] => 1
[nodes] => Array
(
[0] => Array
(
[id] => 5
[name] => Sub 1-1-1
[parent_id] => 3
[nodes] => Array
(
[0] => Array
(
[id] => 7
[name] => sub 1-1-1-1
[parent_id] => 5
)
)
)
)
)
)
)
[1] => Array
(
[id] => 2
[name] => folder 2
[parent_id] => 0
[nodes] => Array
(
[0] => Array
(
[id] => 4
[name] => sub 2-1
[parent_id] => 2
)
)
)
[5] => Array
(
[id] => 6
[name] => folder 3
[parent_id] => 0
)
)
解释可以作为内联注释找到。此函数提供精确的所需输出。还要注意我为设置
$resultsetArray
(
[0] => Array
(
[id] => 1
[name] => folder 1
[parent_id] => 0
[nodes] => Array
(
[0] => Array
(
[id] => 3
[name] => sub 1-1
[parent_id] => 1
[nodes] => Array
(
[0] => Array
(
[id] => 5
[name] => Sub 1-1-1
[parent_id] => 3
[nodes] => Array
(
[0] => Array
(
[id] => 7
[name] => sub 1-1-1-1
[parent_id] => 5
)
)
)
)
)
)
)
[1] => Array
(
[id] => 2
[name] => folder 2
[parent_id] => 0
[nodes] => Array
(
[0] => Array
(
[id] => 4
[name] => sub 2-1
[parent_id] => 2
)
)
)
[5] => Array
(
[id] => 6
[name] => folder 3
[parent_id] => 0
)
)
数据库表返回行。行不适合保存多维数据。一种更合理的方法是创建几个表，您可以使用一个公共值将它们连接在一起。@miknik我用PHP生成多维数组，而不是从database@mickmackusa完成！我希望你能解决这个问题~thanks@mickmackusa你写的代码很好，但你没有理解我的问题可能我解释得不好，但你做得很好，谢谢我想处理出来，在
ulliulli