Question

我想用组合键将多维数组转换为单维数组，也许我的问题不明白，所以我举一个例子来解释：

我有array，如下所示：

// JSON
{"a":{"a":{"a":1},"b":{"a":1},"c":{"a":1},"d":{"a":1},"e":{"a":1,"b":1,"c":1,"d":1},"f":{"a":1}}}

Array
(
    [a] => Array
        (
            [a] => Array
                (
                    [a] => 1
                )

            [b] => Array
                (
                    [a] => 1
                )

            [c] => Array
                (
                    [a] => 1
                )

            [d] => Array
                (
                    [a] => 1
                )

            [e] => Array
                (
                    [a] => 1
                    [b] => 1
                    [c] => 1
                    [d] => 1
                )

            [d] => Array
                (
                    [a] => 1
                )

        )

)

我想要的东西

Array
(
    [0] => '[a][a][a]'
    [1] => '[a][b][a]'
    [2] => '[a][c][a]'
    [3] => '[a][d][a]'
    [4] => '[a][e][a]'
    [5] => '[a][e][b]'
    [6] => '[a][e][c]'
    [7] => '[a][e][d]'
    [8] => '[a][f][a]'
)

希望可以理解
我尝试了很多方法但没有成功，请帮助

How to Flatten a Multidimensional Array?，此答案不是我的问题的解决方案，请比较

Answer 1

您可以尝试使用我的自定义代码来获取所需的数组

<?php
$json = '{"a":{"a":{"a":1},"b":{"a":1},"c":{"a":1},"d":{"a":1},"e":{"a":1,"b":1,"c":1,"d":1},"f":{"a":1}}}';
$array = json_decode($json, true);
$returnarray = [];
$i = 0;
$main = array_keys($array);
foreach($array['a'] as $key => $val) {
    $arr = [];
    array_push($arr, $main[0]);
    $keysarr = array_keys($val);
    array_push($arr, $key);
    if(count($keysarr) > 1) {
        for($j = 0; $j < count($keysarr); $j++) {
            array_push($arr, $keysarr[$j]);
            $returnarray[$i] = $arr;
            array_pop($arr);
            $i++;
        }
    } else {
        array_push($arr, $keysarr[0]);
        $returnarray[$i] = $arr;
        $i++;
    }
}
echo "<pre>";
print_r($returnarray);
?>

Answer 2

效率不高，但是如果您的数组与示例中显示的方式完全一样，那就去做吧。

<?php

$dataSource = array
(
    'a' => array
    (
        'a' => array
        (
            'a' => 1
        ),

        'b' => array
        (
            'a' => 1
        ),

        'c' => array
        (
            'a' => 1
        ),

        'd' => array
        (
            'a' => 2
        ),

        'e' => array
        (
            'a' => 1,
            'b' => 1,
            'c' => 1,
            'd' => 1
        ),

        'f' => array
        (
            'a' => 1
        )
    )
) ;

echo "<pre>";
print_r($dataSource);
echo "</pre>";

$resultData = [];
foreach($dataSource as $key => $val)
{
    foreach($val as $key1 => $val1)
    {     
        foreach($val1 as $key2 => $val2)   
        {
            $resultData[] = '['.$key.']['.$key1.']['.$key2.']';
        }

    }
}

echo "<pre>";
print_r($resultData);
echo "</pre>";

Answer 3

这解决了我的问题，虽然棘手，但适用于我的情况：

$json = '{"a":{"a":{"a":1},"b":{"a":1},"c":{"a":1},"d":{"a":1},"e":{"a":1,"b":1,"c":1,"d":{"a":1}},"f":{"a":1}},"b":{"a":{"a":1}}}';
$data = json_decode($json, true);

function array_str($data = array()) {
 $result = [];
 $data = explode('&', urldecode(http_build_query($data)));
 foreach ($data as $value) {
  $main = explode('[', $value)[0];
  $result[] = preg_replace('/' . $main . '/', '[' . $main . ']', explode('=', $value)[0], 1);  
 }
 return $result;
}

具有组合键的多维数组到单维数组

3 个答案:

您可以尝试使用我的自定义代码来获取所需的数组