Question

所以我的表格帖子的结果如下：

$data = [
    'id_1' => [ 
        '0' => 1,
        '1' => 2
     ],
    'id_2' => [ 
        '0' => 3,
        '1' => 4
    ],
    'id_3' => [ 
        '0' => 5,
        '1' => 6
    ]
];

我想要实现的是将这个数组分成两个不同的数组：

$item_1 = [
    'id_1' => 1,
    'id_2' => 3,
    'id_3' => 5
]

$item_2 = [
    'id_1' => 2,
    'id_2' => 4,
    'id_3' => 6
]

我已经尝试使用所有正确的数组方法，例如array_chunk，array_merge with loops但是我似乎无法理解如何实现这一点。我见过很多类似的帖子，其中第一个键没有像我的数组那样的名称（id_1，id_2，id_3）。但在我的情况下，键的名称是至关重要的，因为它们需要被设置为各个数组中键的名称。

Answer 1

没有循环的解决方案，只是为了好玩：

C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2main.a when searching for -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/SDL2-2.0.4/i686-w64-mingw32/lib\libSDL2main.a when searching for -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2main.a when searching for -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib\libSDL2main.a when searching for -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2main.a when searching for -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib\libSDL2main.a when searching for -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2main.a when searching for -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2main.a when searching for -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2main.a when searching for -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    cannot find -lSDL2main
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.dll.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/SDL2-2.0.4/i686-w64-mingw32/lib\libSDL2.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.dll.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib\libSDL2.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.dll.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib\libSDL2.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.dll.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.dll.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.dll.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    skipping incompatible C:/dev_lib/SDL2-2.0.4/i686-w64-mingw32/lib/libSDL2.a when searching for -lSDL2
C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\bin\ld.exe    cannot find -lSDL2
C:\Users\dubcusb\Desktop\dubcusb\CEPLUSPLUS\Empty Projy\collect2.exe    [Error] ld returned 1 exit status
25      C:\Users\dubcusb\Desktop\dubcusb\CEPLUSPLUS\Empty Projy\Makefile.win    recipe for target '"Empty' failed

Answer 2

只需要一个普通的foreach循环。

$item_1 = [];
$item_2 = [];
foreach ($data as $k => $v){
    $item_1[$k] = $v[0];
    $item_2[$k] = $v[1];
}

希望这有帮助。

Answer 3

比这短得多很难找到：

$item1 = array_map('reset', $data);
$item2 = array_map('end', $data);

解释

array_map期望回调函数作为其第一个参数。在第一行中，这是reset，因此将在reset的每个元素上调用$data，从而有效地获取子数组的第一个元素值。 array_map将这些结果组合在一个新数组中，保留原始密钥。

第二行的功能相同，但使用函数end，它有效地抓取了子数组的最后一个元素的值。

reset和end移动内部数组指针的事实无关紧要。这里唯一重要的是它们还返回它们将指针放在元素的值。

Answer 4

假设每个'id_1'上只有2组键值对，以下内容将按您的意愿执行。

$item_1 = array();
$item_2 = array();

foreach ($data as $item) {
    $item_1 = $item[0];
    $item_2 = $item[1];
}

将多维数组拆分为数组

4 个答案:

解释