合并由相关列值标识的多维数组中的两组深行

Question

我有一个场景，我从 2 个单独的文件（一个

.xml

文件和一个

.txt

文件）获取数据，并且我尝试使用 PHP 将 2 个数组（每个文件一个）组合到每个数组的匹配值上.

我无法控制上述文件的格式，因此使用到目前为止我整理的以下代码：

<?php
function dir_to_array( $dir, $se ) { 

     $result = array(); 
     $cdir   = scandir( $dir ); 

    foreach ( $cdir as $key => $value ) {

        $file_info = pathinfo( $value );

        if ( ! in_array( $value, array( ".", ".." ) ) ) { 
            if ( is_dir( $dir . DIRECTORY_SEPARATOR . $value ) ) {  
        
                 $result[$value] = dir_to_array( $dir . DIRECTORY_SEPARATOR . $value ); 

            } else { 

                if ( $file_info['extension'] == 'xml' ) {

                    if ( isset( $se ) && $se !== 'undefined' ) {
                        if ( strpos( $value, $se ) !== false) {

                            $result['xml'] = xmlToArray( file_get_contents( $dir.'/'.$value ) );

                        } 
                    } 
                } 

                if ( $file_info['extension'] == 'txt' ) {

                    $file = fopen( $dir.'/'.$value, 'r' );
                    $count = 0;
                    
                    while ( ( $line = fgetcsv( $file ) ) !== FALSE ) {
                        // trying to match the structure of the above array ($result['xml'])
                        $result['txt']['records']['PositionRecords']['record'][$count++] = $line;
                    }

                    fclose( $file );
                }

            }
        } 
    } 
     
    return json_encode( $result );
}

echo dir_to_array( 'path/to/something', $arg );

我能够得到以下数组：

数组 1： _.xml

[records] => Array 
(
    [PositionRecord] => Array 
    (
        [record] => Array 
        (
            [0] => Array 
            (
                [keyword] => "something", // Value to match
                [position] => "1"
           ),
           ...
        )
    )
)

数组2：_.txt

[records] => Array 
(
    [PositionRecord] => Array 
    (
        [record] => Array 
        (
            [0] => Array 
            (
                [0] => "something", // Value to match
                [1] => "1000"
           ),
           ...
        )
    )
)

我如何将这些数组连接到匹配的

keyword

值上，最终得到这样的数组：

[records] => Array 
(
    [PositionRecord] => Array 
    (
        [record] => Array 
        (
            [0] => Array 
            (
                [keyword] => "something",
                [position] => "1",
                [volume] => "1000" 
           ),
           ...
        )
    )
)

我尝试过使用

array_merge

、

array_merge_recursive

和

array_combine

，但它们似乎只是将一个数组附加到另一个数组。 我也尝试过 这个答案 和 这个答案 都返回一个空数组

[]

。

Answer 1

手动合并这些数组：

<?php

$a['records']['PositionRecord']['record'][0] = ['keyword'=>"something","position"=>"1"];
$a['records']['PositionRecord']['record'][1] = ['keyword'=>"something2","position"=>"2"];
$b['records']['PositionRecord']['record'][0] = ["something","1000"];
$b['records']['PositionRecord']['record'][1] = ["something2","2000"];


for($i = 0, $c = count($a['records']['PositionRecord']['record']); $i < $c; $i ++)
{
    $a['records']['PositionRecord']['record'][$i]['volume'] = $b['records']['PositionRecord']['record'][$i][1];
}

echo "<pre>";
var_dump($a);
echo "</pre>";

输出：

array(1) {
  ["records"]=>
  array(1) {
    ["PositionRecord"]=>
    array(1) {
      ["record"]=>
      array(2) {
        [0]=>
        array(3) {
          ["keyword"]=>
          string(9) "something"
          ["position"]=>
          string(1) "1"
          ["volume"]=>
          string(4) "1000"
        }
        [1]=>
        array(3) {
          ["keyword"]=>
          string(10) "something2"
          ["position"]=>
          string(1) "2"
          ["volume"]=>
          string(4) "2000"
        }
      }
    }
  }
}

Answer 2

要合并嵌套在结果数组内的两个有效负载的行，请使用一个循环将关键字引用的 xml 行推送到新的结果数组中，然后使用另一个循环将 txt 行数据附加到先前引用的行（如果找到） 。 以下脚本旨在适应 xml 行可能没有相关 txt 行的可能性，反之亦然。 演示

$xmlRecords = $result['xml']['records']['PositionRecord']['record'];
$txtRecords = $result['txt']['records']['PositionRecord']['record'];
$merged = [];
foreach ($xmlRecords as $xml) {
    $ref[$xml['keyword']] = $xml;
    $merged[] =& $ref[$xml['keyword']];
}
foreach ($txtRecords as [$keyword, $volume]) {
    if (!isset($ref[$keyword])) {
        // don't bother making a new reference, just push the row
        $merged[] = [
            'keyword' => $keyword,
            'volume' => $volume,
        ];
    } else {
        $ref[$keyword]['volume'] = $volume;
    }
}
var_export($merged);

新样本输入：

$result = [
    'xml' => [
        'records' => [
            'PositionRecord' => [
                'record' => [
                    ['keyword' => 'foo', 'position' => '1'],
                    ['keyword' => 'example', 'position' => '2'],
                    ['keyword' => 'bar', 'position' => '3'],
                ],
            ],
        ],
    ],
    'txt' => [
        'records' => [
            'PositionRecord' => [
                'record' => [
                    ['foo', '1000'],
                    ['bar', '3000'],
                    ['test', '2000'],
                ]
            ]
        ]
    ]
];

新样本输入的输出：

array (
  0 => 
  array (
    'keyword' => 'foo',
    'position' => '1',
    'volume' => '1000',
  ),
  1 => 
  array (
    'keyword' => 'example',
    'position' => '2',
  ),
  2 => 
  array (
    'keyword' => 'bar',
    'position' => '3',
    'volume' => '3000',
  ),
  3 => 
  array (
    'keyword' => 'test',
    'volume' => '2000',
  ),
)