使用另一个数组作为键创建关联数组

Create an associative array using another array as keys

我目前有 $keys 数组

array(5) {
  [0] =>
  string(9) "SessionID"
  [1] =>
  string(5) "Title"
  [2] =>
  string(11) "Description"
  [3] =>
  string(5) "Level"
  [4] =>
  string(4) "Type"
}
,我将其用作另一个名为 $values 的数组的值的键。

我想通过将另一个数组映射到 $keys 来创建关联数组。

另一种说法是我想 array_combine($keys, $values)$keys 只有 5 个元素,而 $values 有超过 3000 个元素。

编辑 1:很抱歉没有放入 $values 示例。它的顺序与 $keys:

相同
+-----------+-------+-------------+---------+------+
| SESSIONID | TITLE | DESCRIPTION |  LEVEL  | TYPE |
+-----------+-------+-------------+---------+------+
|           |       |             |         |      |
| 1         | A     | Describe A  | Level 1 | Word |
|           |       |             |         |      |
| 2         | B     | Describe B  | Level 2 | Word |
+-----------+-------+-------------+---------+------+

$values = [
1, 'A', 'Describe A', 'Level 1', 'Word',
2, 'B', 'Describe B', 'Level 2', 'Word'
];

因为我从一个 CSV 文件填充了两个数组。

由于您没有解释 $values 是什么,所以我猜了一点。这里有两种情况。

如果您的值都在同一级别,如下所示,我们可以将它们分块:

$keys = [ "SessionID", "Title", "Description", "Level", "Type", ];
$values = [
    1,
    "Title A",
    "Desc A",
    "Monster",
    "car",
    2,
    "Title B",
    "Desc B",
    "Devil",
    "car",
];

将数据切割成长度等于键数的数组。

$chunks = array_chunk($values, count($keys));

然后按照您的建议使用 array_combine 映射它们。

$ass = array_map(function ($chunk) use ($keys) {
    return array_combine($keys, $chunk);
}, $chunks);

如果您的数组是数组(或行)的数组,我们可以跳过分块部分并将其直接传递给映射函数:

$values = [
    [ 1, "Title A", "Desc A", "Monster", "car" ],
    [ 2, "Title B", "Desc B", "Devil", "car" ]
];

$ass = array_map(function ($chunk) use ($keys) {
    return array_combine($keys, $chunk);
}, $values);

因为if it's worth doing, it's worth overdoing, here's a slightly more needlessly complex version of the first part of

<?php
$keys = array("SessionID","Title","Description","Level","Type");

$it = new NoRewindIterator(gen_data());
do {
    $foo = array_combine(
        $keys,
        iterator_to_array(new LimitIterator($it, 0, 5))
    );
    var_export($foo); echo "\r\n";
}
while ( $it->valid() );

function gen_data() {   
    static $HOW_MANY_WOULD_YOU_LIKE = 100;

    $x = array("Session #","Title #","Desc #","Lvl #","Type #");
    for($i=0; $i<$HOW_MANY_WOULD_YOU_LIKE*5; $i++) {
        yield $x[$i%5].((int)($i/5)+1);
    }
}

http://docs.php.net/language.generators , http://docs.php.net/class.norewinditerator and http://docs.php.net/class.limititerator

数组是如此 2015(该死的 iterator_to_array):-D