Question

我有以下数组，它由8个子数组中的简单整数（ID）组成。我有8个组，我需要数组1中的整数进入第一个组，数组2中的整数进入第二个组，依此类推。我打算使用sql插入来实现这一点。

我的数据如下：

Array
(
    [0] => Array
        (
            [0] => 4012
            [1] => 3914
            [2] => 4054
            [3] => 3911
            [4] => 4010
            [5] => 3979
        )

    [1] => Array
        (
            [0] => 3916
            [1] => 3946
            [2] => 4059
            [3] => 3924
            [4] => 4018
            [5] => 3967
        )

    [2] => Array
        (
            [0] => 3983
            [1] => 4057
            [2] => 3980
            [3] => 3901
            [4] => 4045
            [5] => 3955
        )

    [3] => Array
        (
            [0] => 3908
            [1] => 3898
            [2] => 3939
            [3] => 4036
            [4] => 4079
            [5] => 3479
        )

    [4] => Array
        (
            [0] => 3995
            [1] => 3910
            [2] => 4047
            [3] => 3988
            [4] => 3965
            [5] => 4080
        )

    [5] => Array
        (
            [0] => 3925
            [1] => 3561
            [2] => 4000
            [3] => 4061
            [4] => 3950
            [5] => 4058
        )

    [6] => Array
        (
            [0] => 3989
            [1] => 3964
            [2] => 3904
            [3] => 4070
            [4] => 3954
            [5] => 3984
        )

    [7] => Array
        (
            [0] => 3985
            [1] => 4044
            [2] => 4062
            [3] => 4014
            [4] => 3899
        )

)

我的分组是：

Group 01a
Group 01b
02a组
02b组
03a组
03b组
04a组
04b组

我正在运行的php效果很好，因为它创建了上述组的名称，但是处理smallgroups数组的foreach不起作用。当我只想在循环中处理第一个子数组时，它会复制smallusers 8次。

$count = 0;
foreach ($biggroup as $key => $users) {
    $smallgroups = array_chunk($users, ceil(count($users) / 8));
    for ($i = 1; $i <= 4; $i++) {
    $groupnum = sprintf("%02d", $count * 4 + $i);
        foreach (range('a', 'b') as $letter) {
            $nameofgroup = 'Group ' . $groupnum . $letter;
            foreach ($smallgroups as $f => $smallusers) {
            }
        }
    }
}
$count++;

我希望以下几点：

01A组 4012， 3914， 4054， 911， 4010， 3979

01B组 3916， 3946， 4059， 3924， 4018， 3967

等

Answer 1

array_walk() -将用户提供的函数应用于数组的每个成员

您可以使用array_walk，这里$arr是原始数组

$groups = ['01a','01b','02a','02b','03a','03b','04a','04b'];
$res = [];
array_walk($arr, function($v, $k) use ($groups, &$res){
   $res[$groups[$k]] = $v;
});
echo '<pre>';
print_r($res);

输出：-

 Array
(
[01a] => Array
    (
        [0] => 4012
        [1] => 3914
        [2] => 4054
        [3] => 3911
        [4] => 4010
        [5] => 3979
    )

[01b] => Array
    (
        [0] => 3916
        [1] => 3946
        [2] => 4059
        [3] => 3924
        [4] => 4018
        [5] => 3967
    )
    ........
    ........
    ........

array_combine() -通过使用一个数组作为键并使用另一个数组作为值来创建数组

我正在使用一些数组值和键进行演示

$arr = Array
(
  0 => Array
    (
        0 => 4012,
        1 => 3914
    ),

  1 => Array
    (
        0 => 3916,
        1 => 3946
    ),

  2 => Array
    (
        0 => 3983,
        1 => 4057
    ),

  3 => Array
    (
        0 => 3908,
        1 => 3898
    ),

  4 => Array
    (
        0 => 3995,
        1 => 3910
    )

);
$groups = ['01a','01b','02a','02b','03a'];
$res = array_combine($groups, $arr);
echo '<pre>';
print_r($res);

Answer 2

另一种方法是从biggroup数组的索引开始生成组名。代码中的注释：

$count = 0;
foreach ($biggroup as $key => $users) {   //

    // defines the number
    $groupnum = floor($key/2) + 1;

    // the letter is decided whether the $key is even (a) or odd (b)
    $letter = ($key % 2 == 0) ? 'a' : 'b';

    // hence:
    $nameofgroup = 'Group ' . $groupnum . $letter;

    // get the array of users
    $smallgroups = array_chunk($users, ceil(count($users) / 8));

    // loop through them
    foreach ($smallgroups as $smallusers) {
        foreach ($smallusers as $u) {
            // do what you need to do with each user
            echo "$nameofgroup $u\n";
        }
    }
}
$count++;

您可以在这里https://eval.in/1101429

看到运行中的数组（减小了数组大小）

输出：

Group 1a 4012
Group 1a 3914
Group 1a 4054
Group 1a 3911
Group 1a 4010
Group 1a 3979
Group 1b 3916
Group 1b 3946
Group 1b 4059
Group 1b 3924
Group 1b 4018
Group 1b 3967
Group 2a 3983
Group 2a 4057
Group 2a 3980
Group 2a 3901
Group 2a 4045
Group 2a 3955

拆分数组并添加到组

2 个答案: