Question

我想基于第一个主阵列对所有php数组进行排序。

这是我想用来对所有其他数组进行排序的主数组：

Array (

[0] => 10
[1] => 14
[2] => 15
[3] => 20
[4] => 21
[5] => 24
[6] => 25
[7] => 28
[8] => 30
[9] => 45
[10] => 60
[11] => 90
[12] => 120
[13] => 150
[14] => 180
[15] => 210
[16] => 240
[17] => 270
[18] => 365

)

这是需要排序的数组：

Array (

[0] => Array
    (
        [14] => 49.21
        [20] => 71.04
        [25] => 89.58
        [30] => 100.00
    )

[1] => Array
    (
        [180] => 412.00
        [150] => 347.00
        [120] => 285.00
        [90] => 224.00
        [60] => 165.00
        [30] => 100.00
        [14] => 47.00
    )

）

我需要最终结果如下：

Array (

[0] => Array
    (
        [10] => n/a
        [14] => 49.21
        [15] => n/a
        [20] => 71.04
        [21] => n/a
        [24] => n/a
        [25] => 89.58
        [28] => n/a
        [30] => 100.00
        [45] => n/a
        [60] => n/a
        [90] => n/a
        [120] => n/a
        [150] => n/a
        [180] => n/a
        [210] => n/a
        [240] => n/a
        [270] => n/a
        [365] => n/a
    )

[1] => Array
    (
        [10] => n/a
        [14] => 71.04
        [15] => n/a
        [20] => n/a
        [21] => n/a
        [24] => n/a
        [25] => n/a
        [28] => n/a
        [30] => 100.00
        [45] => n/a
        [60] => 165.00
        [90] => 224.00
        [120] => 285.00
        [150] => 347.00
        [180] => 412.00
        [210] => n/a
        [240] => n/a
        [270] => n/a
        [365] => n/a
    )

    )

感谢。

Answer 1

假设你的初始数组是$ source，而$ todo是你的第二个包含两个子集的数组，那么：

$keys = array_flip($todo);
$keys = array_map(function() { return 'n/a'; }, $keys); // set all values to be "n/a";

foreach($todo as $idx => $do) {
   $todo[$idx] = $do + $keys; // merge without renumbering.
}

Answer 2

如果我从你的问题中理解了这一点，你想要使两个数组长度相同，并将不在其中的键设置为"n/a"。

变体与array_merge（Demo）：

$shorten = array(
  0 => 10,
  1 => 14,
  2 => 15,
  3 => 20,
  4 => 21,
  5 => 24,
  6 => 25,
  7 => 28,
  8 => 30,
  9 => 45,
  10 => 60,
  11 => 90,
  12 => 120,
  13 => 150,
  14 => 180,
  15 => 210,
  16 => 240,
  17 => 270,
  18 => 365,
);

$data = array(
  0 => array(
    14 => '49.21',
    20 => '71.04',
    25 => '89.58',
    30 => '100.00',
  ),
  1 => array(
    180 => '412.00',
    150 => '347.00',
    120 => '285.00',
    90 => '224.00',
    60 => '165.00',
    30 => '100.00',
    14 => '47.00',
  ),
);

// default array as the base
$shorten = array_combine($shorten, array_fill(0, count($shorten), 'n/a'));

foreach($data as &$array) {
    // merge to get set members
    $array = array_merge($shorten, $array);
}
unset($array);

var_dump($data);

结果：

array(2) {
  [0]=>
  array(23) {
    [0]=>
    string(3) "n/a"
    [1]=>
    string(3) "n/a"
    [2]=>
    string(3) "n/a"
    [3]=>
    string(3) "n/a"
    [4]=>
    string(3) "n/a"
    [5]=>
    string(3) "n/a"
    [6]=>
    string(3) "n/a"
    [7]=>
    string(3) "n/a"
    [8]=>
    string(3) "n/a"
    [9]=>
    string(3) "n/a"
    [10]=>
    string(3) "n/a"
    [11]=>
    string(3) "n/a"
    [12]=>
    string(3) "n/a"
    [13]=>
    string(3) "n/a"
    [14]=>
    string(3) "n/a"
    [15]=>
    string(3) "n/a"
    [16]=>
    string(3) "n/a"
    [17]=>
    string(3) "n/a"
    [18]=>
    string(3) "n/a"
    [19]=>
    string(5) "49.21"
    [20]=>
    string(5) "71.04"
    [21]=>
    string(5) "89.58"
    [22]=>
    string(6) "100.00"
  }
  [1]=>
  array(26) {
    [0]=>
    string(3) "n/a"
    [1]=>
    string(3) "n/a"
    [2]=>
    string(3) "n/a"
    [3]=>
    string(3) "n/a"
    [4]=>
    string(3) "n/a"
    [5]=>
    string(3) "n/a"
    [6]=>
    string(3) "n/a"
    [7]=>
    string(3) "n/a"
    [8]=>
    string(3) "n/a"
    [9]=>
    string(3) "n/a"
    [10]=>
    string(3) "n/a"
    [11]=>
    string(3) "n/a"
    [12]=>
    string(3) "n/a"
    [13]=>
    string(3) "n/a"
    [14]=>
    string(3) "n/a"
    [15]=>
    string(3) "n/a"
    [16]=>
    string(3) "n/a"
    [17]=>
    string(3) "n/a"
    [18]=>
    string(3) "n/a"
    [19]=>
    string(6) "412.00"
    [20]=>
    string(6) "347.00"
    [21]=>
    string(6) "285.00"
    [22]=>
    string(6) "224.00"
    [23]=>
    string(6) "165.00"
    [24]=>
    string(6) "100.00"
    [25]=>
    string(5) "47.00"
  }
}

具有映射功能的变体（Demo）：

$shorten = array(
  0 => 10,
  1 => 14,
  2 => 15,
  3 => 20,
  4 => 21,
  5 => 24,
  6 => 25,
  7 => 28,
  8 => 30,
  9 => 45,
  10 => 60,
  11 => 90,
  12 => 120,
  13 => 150,
  14 => 180,
  15 => 210,
  16 => 240,
  17 => 270,
  18 => 365,
);

// overload $shorten array with a mapping function
$shorten = function(array $a) use ($shorten)
{
    $r = array();
    foreach($shorten as $i => $k)
    {
        $r[$k] = isset($a[$k]) ? $a[$k] : 'n/a';
    }
    return $r;
};


$data = array(
  0 => array(
    14 => '49.21',
    20 => '71.04',
    25 => '89.58',
    30 => '100.00',
  ),
  1 => array(
    180 => '412.00',
    150 => '347.00',
    120 => '285.00',
    90 => '224.00',
    60 => '165.00',
    30 => '100.00',
    14 => '47.00',
  ),
);

// apply mapping function to $data
$data = array_map($shorten, $data);

var_dump($data); # result

结果：

array(2) {
  [0]=>
  array(19) {
    [10]=>
    string(3) "n/a"
    [14]=>
    string(5) "49.21"
    [15]=>
    string(3) "n/a"
    [20]=>
    string(5) "71.04"
    [21]=>
    string(3) "n/a"
    [24]=>
    string(3) "n/a"
    [25]=>
    string(5) "89.58"
    [28]=>
    string(3) "n/a"
    [30]=>
    string(6) "100.00"
    [45]=>
    string(3) "n/a"
    [60]=>
    string(3) "n/a"
    [90]=>
    string(3) "n/a"
    [120]=>
    string(3) "n/a"
    [150]=>
    string(3) "n/a"
    [180]=>
    string(3) "n/a"
    [210]=>
    string(3) "n/a"
    [240]=>
    string(3) "n/a"
    [270]=>
    string(3) "n/a"
    [365]=>
    string(3) "n/a"
  }
  [1]=>
  array(19) {
    [10]=>
    string(3) "n/a"
    [14]=>
    string(5) "47.00"
    [15]=>
    string(3) "n/a"
    [20]=>
    string(3) "n/a"
    [21]=>
    string(3) "n/a"
    [24]=>
    string(3) "n/a"
    [25]=>
    string(3) "n/a"
    [28]=>
    string(3) "n/a"
    [30]=>
    string(6) "100.00"
    [45]=>
    string(3) "n/a"
    [60]=>
    string(6) "165.00"
    [90]=>
    string(6) "224.00"
    [120]=>
    string(6) "285.00"
    [150]=>
    string(6) "347.00"
    [180]=>
    string(6) "412.00"
    [210]=>
    string(3) "n/a"
    [240]=>
    string(3) "n/a"
    [270]=>
    string(3) "n/a"
    [365]=>
    string(3) "n/a"
  }
}

基于另一个数组创建php数组。

2 个答案: