數組：
<code>Array
(
[0] => Array
(
[id] => 1
[menu_collapse] => 超级菜单
[menu_items] => 写文章
[cid] => 1
)
[1] => Array
(
[id] => 2
[menu_collapse] => 维护菜单
[menu_items] => 管理数据
[cid] => 2
)
[2] => Array
(
[id] => 3
[menu_collapse] => 维护菜单
[menu_items] => 管理用户
[cid] => 2
)
)</code>如何把上面陣列轉換這樣的？
<code>Array
(
[0] => Array
(
[id] => 1
[menu_collapse] => 超级菜单
[menu_items] => 写文章
[cid] => 1
)
[1] => Array
(
[new] => Array
(
[id] => 2
[menu_collapse] => 维护菜单
[menu_items] => 管理数据
[cid] => 2
)
(
[id] => 2
[menu_collapse] => 维护菜单
[menu_items] => 管理数据
[cid] => 2
)
)</code>數組：
<code>Array
(
[0] => Array
(
[id] => 1
[menu_collapse] => 超级菜单
[menu_items] => 写文章
[cid] => 1
)
[1] => Array
(
[id] => 2
[menu_collapse] => 维护菜单
[menu_items] => 管理数据
[cid] => 2
)
[2] => Array
(
[id] => 3
[menu_collapse] => 维护菜单
[menu_items] => 管理用户
[cid] => 2
)
)</code>如何把上面陣列轉換這樣的？
<code>Array
(
[0] => Array
(
[id] => 1
[menu_collapse] => 超级菜单
[menu_items] => 写文章
[cid] => 1
)
[1] => Array
(
[new] => Array
(
[id] => 2
[menu_collapse] => 维护菜单
[menu_items] => 管理数据
[cid] => 2
)
(
[id] => 2
[menu_collapse] => 维护菜单
[menu_items] => 管理数据
[cid] => 2
)
)</code>
<code class="php">
$arr = [
['id' => 1,
'menu_collapse' => '超级菜单',
'menu_items' => '写文章',
'cid' => 1,
],
[ 'id' => 2,
'menu_collapse' => '维护菜单',
'menu_items' => '管理数据',
'cid' => 2,
],
[ 'id' => 3,
'menu_collapse' => '维护菜单',
'menu_items' => '管理用户',
'cid' => 2,
]
];
$result=[];
$res=[];
foreach($arr as $k=>$v){
$result[$v['cid']][]=$v;
}
foreach($result as $key=>$value){
if(count($value) == 1) {
$res[$key]=$value[0];
} else{
$res[$key]['new']=$value;
}
}
echo '<pre class="brush:php;toolbar:false">';print_r(array_values($res));
/*
Array
(
[0] => Array
(
[id] => 1
[menu_collapse] => 超级菜单
[menu_items] => 写文章
[cid] => 1
)
[1] => Array
(
[new] => Array
(
[0] => Array
(
[id] => 2
[menu_collapse] => 维护菜单
[menu_items] => 管理数据
[cid] => 2
)
[1] => Array
(
[id] => 3
[menu_collapse] => 维护菜单
[menu_items] => 管理用户
[cid] => 2
)
)
)
)
*/</code>
你只能遍歷數組來處理了。
