我有许多子数组，我想在PHP中的单个数组的所有子数组

inn6fuwd 于 2023-03-11 发布在 PHP

关注(0)|答案(2)|浏览(138)

嗨，我有很多子数组里面数组所有的数据完全来自API输出结果是我尝试数组递归php，但没有工作

Array
(
    [0] => Array
        (
            
            [price] => 100
            [weight] => 42
            [sub_option] => Array
                (
                    [0] => Array
                        (
                            [price] => 25.99
                            [points] => 32
                            [sub_option] => Array
                                (
                                    [0] => Array
                                        (
                                            [price] => 27.99
                                            [weight] => 83
                                            [sub_option] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [price] => 14.99
                                                            [weight] => 50
                                                            [sub_option] => NULL
                                                        )

                                                )

                                        )

                                )

                        )

                    [1] => Array
                        (
                            [price] => 24.99
                            [weight] => 25
                            [sub_option] => NULL

                        )

                )

        )

    [1] => Array
        (
            [price] => 100
            [weight] => 4233
            [sub_option] => NULL
        )

)

像这样，但我希望输出像这样......

Array
(
    [0] => Array
        (
            [price] => 100
            [weight] => 42
        )
    [1] => Array
        (
            [price] => 25.99
            [points] => 32
        )
    [2] => Array
        (
            [price] => 27.99
            [weight] => 83
        )
    [3] => Array
        (
            [price] => 14.99
            [weight] => 50
            [sub_option] => NULL
        )

    [4] => Array
        (
            [price] => 24.99
            [weight] => 25
            [sub_option] => NULL

        )
    [5] => Array
        (
            [price] => 100
            [weight] => 4233
            [sub_option] => NULL
        )
)

我正在使用PHP版本7，我也试图从stackoverflow搜索许多在线解决方案，但我找不到请帮助我，谢谢
我尝试了此代码，但不工作

$output = [];

$arr1 = [];
$arr2 = [];
foreach($arr as $key=>$value){
    $arr1 = [
        'price' => $value['price'],
        'weight' => $value['weight'],

    ];

    if(isset($value['sub_option']) && is_array($value['sub_option'])){
        foreach($value['sub_option'] as $val2){
            $arr2 = [
                'price' => $val2['price'],
                'weight' => $val2['weight'],
            ];

        }
    }

$output[] = $arr1+$arr2;

}

print_r($output);

php

来源：https://stackoverflow.com/questions/75685341/i-have-many-children-arrays-and-i-want-all-children-arrays-in-single-array-in-ph

2条答案

按热度按时间

toiithl61#

下面是一种方法

function format_array($arr) {
    $tmp = [];
    foreach($arr as $a) {
        //pass each of the root values to the helper function
        //also pass a reference to $tmp
        format_array_helper($a, $tmp);
    }
    return $tmp;
}

function format_array_helper($loop_value, &$tmp) {
    
    //set the sub options to it's own variable,
    //unset the sub options from the main variable
    $sub_options = $loop_value['sub_option'];
    unset($loop_value['sub_option']);
    
    //add the main variable to $tmp
    $tmp[] = $loop_value;
    
    //if there are sub options
    if(!empty($sub_options)) {
        foreach($sub_options as $sub) {
            
            //pass each root of sub_options to the helper function
            //also pass the reference to tmp
            format_array_helper($sub, $tmp);
            
        }
    }
}

假设您的数组名为$arr，下面是print_r(format_array($arr));的输出

Array
(
    [0] => Array
        (
            [price] => 100
            [weight] => 42
        )

    [1] => Array
        (
            [price] => 25.99
            [weight] => 32
        )

    [2] => Array
        (
            [price] => 27.99
            [weight] => 83
        )

    [3] => Array
        (
            [price] => 14.99
            [weight] => 50
        )

    [4] => Array
        (
            [price] => 24.99
            [weight] => 25
        )

    [5] => Array
        (
            [price] => 100
            [weight] => 4233
        )

)

赞(0）回复(0）举报 2023-03-11

hc2pp10m2#

下面是另一种方法（使用匿名函数）

#example date
$data = [
    [
        'price' => 101,
        'weight' => 42,
        'sub_option' =>
            [
                'price' => 101,
                'weight' => 43,
                'sub_option' => [
                                 [
                                  'price' => 101,
                                  'weight' => 44,
                                  'sub_option' => null
                                 ]
                                ]
            ]
    ],
    [
        'price' => 102,
        'weight' => 42,
        'sub_option' => null
    ]
];
#global collector
$result = [];
#function variable, here with null value so we can use it as reference
$func = null;
#create the real function & use references
$func = function ($current) use (&$result, &$func) {
    #look for assoc array key
    if (isset($current['price'])) {
        #copy and unset not needed keys
        $tmp = $current;
        unset($tmp['sub_option']);
        #collect 
        $result[] = $tmp;
        #check for subarray and go deeper
        if (is_array($current['sub_option'])) {
            $func($current['sub_option']);
        }
    } elseif (is_array($current)) {
        #iterate index arrays
        foreach ($current as $sub) {
            $func($sub);
        }
    }
};
$func($data);
var_export($result);

我不会详细解释这个，因为第一个答案GrumpyCrouton应该采取/接受。但当你花一些时间，希望你能学到新的东西和php如何从这个小代码剪工作。

赞(0）回复(0）举报 2023-03-11

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我有许多子数组，我想在PHP中的单个数组的所有子数组

2条答案

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