我有一个这样的数组：
array (
0 =>
array (
'name' => 'menus',
'route' => 'admin.menu',
'parent_id' => null,
),
1 =>
array (
'name' => 'users',
'route' => 'users',
'parent_id' => 0,
),
2 =>
array (
'name' => 'roles',
'route' => 'roles',
'parent_id' => 0,
),
3 =>
array (
'name' => 'testmenu-3',
'route' => 'testmenu-3',
'parent_id' => 1,
),
...
5 =>
array (
'name' => 'testmenu-5',
'route' => 'testmenu-5',
'parent_id' => 1,
),
6 =>
array (
'name' => 'testmenu-6',
'route' => 'testmenu-6',
'parent_id' => 0,
),
...
)
我想从数组中创建一个菜单三，所以输出应该是这样的：
menus
users
testmenu-3
testmenu-5
roles
testmenu-6
这是构建数组的代码：
$menu_array = [
['name' => 'menus', 'route' => 'admin.menu'],
['name' => 'users', 'route' => 'users'],
['name' => 'roles', 'route' => 'roles'],
];
for ($i = 3; $i < 25; $i++) {
$menu_array[$i] = [
'name' => 'testmenu-'.$i,
'route' => 'testmenu-'.$i,
];
}
foreach ($menu_array as $key => $menu) {
$menu_array[$key]['parent_id'] = mt_rand(0, 5);
}
这就是我如何对数组进行排序但由于我没有得到正确的输出而无法正常工作：
foreach ($menu_array as $key => $item) {
$arr[$item['parent_id']]['menus'][] = $item;
}
但是我错过了父值，我如何在$arr[$item['parent_id']] ??
答案 0 :(得分：1)
答案 1 :(得分：0)
不确定这是不是你想要的。更像是扭曲的预感。对于实时测试，请访问：https://eval.in/578998
下面：
<?php
$menu_array = [
['name' => 'menus', 'route' => 'admin.menu'],
['name' => 'users', 'route' => 'users'],
['name' => 'roles', 'route' => 'roles'],
];
for ($i = 3; $i < 25; $i++) {
$menu_array[$i] = [
'name' => 'testmenu-'.$i,
'route' => 'testmenu-'.$i,
];
}
foreach ($menu_array as $key => $menu) {
$menu_array[$key]['parent_id'] = mt_rand(0, 5);
}
$arr = array();
foreach($menu_array as $intDex=>$arrData){
if($arrData['name'] == "menus"){
if(!array_key_exists("menus", $arr)){
$arr["menus"] = $arrData;
$menusID = $arr['menus']['parent_id'];
unset($arr['menus']['parent_id']);
$arr['menus']['id'] = $menusID;
}
}
if($arrData['name'] == "roles"){
if(!array_key_exists("roles", $arr)){
$arr["roles"] = $arrData;
$rolesID = $arr['roles']['parent_id'];
unset($arr['roles']['parent_id']);
$arr['roles']['id'] = $rolesID;
}
}
if($arrData['name'] == "users"){
if(!array_key_exists("users", $arr)){
$arr["users"] = $arrData;
$usersID = $arr['users']['parent_id'];
unset($arr['users']['parent_id']);
$arr['users']['id'] = $usersID;
}
}
}
foreach($menu_array as $intDex=>$arrData){
if($arrData['name'] == "menus" || $arrData['name'] == "roles" || $arrData['name'] == "users" ) {
continue;
}else {
if ($arrData['parent_id'] == $arr['menus']['id']) {
$arr['menus'][] = $arrData;
}
if ($arrData['parent_id'] == $arr['roles']['id']) {
$arr['roles'][] = $arrData;
}
if ($arrData['parent_id'] == $arr['users']['id']) {
$arr['users'][] = $arrData;
}
}
}
var_dump($arr);
DUMP OUTPUT：
'menus' =>
array (size=4)
'name' => string 'menus' (length=5)
'route' => string 'admin.menu' (length=10)
'id' => int 1
0 =>
array (size=3)
'name' => string 'testmenu-5' (length=10)
'route' => string 'testmenu-5' (length=10)
'parent_id' => int 1
'users' =>
array (size=8)
'name' => string 'users' (length=5)
'route' => string 'users' (length=5)
'id' => int 0
0 =>
array (size=3)
'name' => string 'testmenu-3' (length=10)
'route' => string 'testmenu-3' (length=10)
'parent_id' => int 0
1 =>
array (size=3)
'name' => string 'testmenu-7' (length=10)
'route' => string 'testmenu-7' (length=10)
'parent_id' => int 0
2 =>
array (size=3)
'name' => string 'testmenu-12' (length=11)
'route' => string 'testmenu-12' (length=11)
'parent_id' => int 0
3 =>
array (size=3)
'name' => string 'testmenu-14' (length=11)
'route' => string 'testmenu-14' (length=11)
'parent_id' => int 0
4 =>
array (size=3)
'name' => string 'testmenu-24' (length=11)
'route' => string 'testmenu-24' (length=11)
'parent_id' => int 0
'roles' =>
array (size=7)
'name' => string 'roles' (length=5)
'route' => string 'roles' (length=5)
'id' => int 2
0 =>
array (size=3)
'name' => string 'testmenu-8' (length=10)
'route' => string 'testmenu-8' (length=10)
'parent_id' => int 2
1 =>
array (size=3)
'name' => string 'testmenu-16' (length=11)
'route' => string 'testmenu-16' (length=11)
'parent_id' => int 2
2 =>
array (size=3)
'name' => string 'testmenu-20' (length=11)
'route' => string 'testmenu-20' (length=11)
'parent_id' => int 2
3 =>
array (size=3)
'name' => string 'testmenu-23' (length=11)
'route' => string 'testmenu-23' (length=11)
'parent_id' => int 2
现在要获取您描述的菜单结构：
<?php
$output = "";
foreach($arr as $intDex=>$arrMenu){
$output .= "<ul>" .PHP_EOL;
$output .= "<li><a href='{$arrMenu['route']}' data-id='{$arrMenu['id']}'>{$arrMenu['name']}</a></li>" .PHP_EOL;
foreach($arrMenu as $iDex=>$data){
if(is_array($data)) {
$output .= "<li><a href='{$data['route']}' data-pid='{$data['parent_id']}'>{$data['name']}</a></li>" .PHP_EOL;
}
}
$output .= "</ul>";
}
echo $output;
以下是HTML Source-Code Perspective的输出结果：
<ul>
<li><a href='admin.menu' data-id='1'>menus</a></li>
<li><a href='testmenu-3' data-pid='1'>testmenu-3</a></li>
<li><a href='testmenu-6' data-pid='1'>testmenu-6</a></li>
</ul>
<ul>
<li><a href='users' data-id='3'>users</a></li>
<li><a href='testmenu-7' data-pid='3'>testmenu-7</a></li>
<li><a href='testmenu-18' data-pid='3'>testmenu-18</a></li>
<li><a href='testmenu-24' data-pid='3'>testmenu-24</a></li>
</ul>
<ul>
<li><a href='roles' data-id='2'>roles</a></li>
<li><a href='testmenu-4' data-pid='2'>testmenu-4</a></li>
<li><a href='testmenu-12' data-pid='2'>testmenu-12</a></li>
<li><a href='testmenu-17' data-pid='2'>testmenu-17</a></li>
<li><a href='testmenu-19' data-pid='2'>testmenu-19</a></li>
<li><a href='testmenu-20' data-pid='2'>testmenu-20</a></li>
</ul>
<!-- OTHERWISE-->
menus
testmenu-3
testmenu-6
users
testmenu-7
testmenu-18
testmenu-24
roles
testmenu-4
testmenu-12
testmenu-17
testmenu-19
testmenu-20
答案 2 :(得分：0)
假设您的阵列名称为$array。 Online Example
$keys = array_keys($array);
array_multisort(
array_column($array, 'parent_id'), SORT_ASC, SORT_NUMERIC, $array, $keys
);
$array = array_combine($keys, $array);
$parent = $array[0]['name'];
$out = array();
$pid = 0;
$space = '';
unset($array[0]);
foreach($array as $key => $val){
if($pid != $val['parent_id']){
$pid = $val['parent_id'];
$space .= ' ';
}
echo $space.$val['name']."<br/>";
}