在PHP中使用公共密钥合并数组

Question

I'm merging a couple of arrays like this in PHP

//all the other stuff
$array1 = (array) $new;
$array2 =  (array) $info;
$ab = array('a' => $array1, 'b' => $array2);
print_r($ab);

print_r($ab) gives me something like this:

Array
(
    [a] => Array
        (
            [entries] => Array
                (
                    [0] => stdClass Object
                        (
                            [title] => Serial - This American Life
                            [id] => Serial is a podcast from the creators of This American Life, hosted by Sarah Koenig. 
                        )

                    [1] => stdClass Object
                        (
                            [title] => This American Life - This American Life
                            [id] => This American Life is a weekly public radio show, heard by 2.2 million people on more than 500 stations. 
                        )

                    [2] => stdClass Object
                        (
                            [title] => Real Crime Profile - Real Crime Profile
                            [id] => Podcast talking about criminal cases and personality profiling.
                        )

                )

        )

    [b] => Array
        (
            [entries] => Array
                (
                    [0] => stdClass Object
                        (
                            [artistName] => This American Life
                            [feedUrl] => http://feeds.serialpodcast.org/serialpodcast
                            [primaryGenreName] => News & Politics
                            [artworkUrl60] => http://is2.mzstatic.com/image/thumb/Music69/v4/70/c9/71/70c97133-f3a8-738e-ea2c-27a6dc7d9731/source/60x60bb.jpg
                        )

                    [1] => stdClass Object
                        (
                            [artistName] => This American Life
                            [feedUrl] => http://feed.thisamericanlife.org/talpodcast
                            [primaryGenreName] => Personal Journals
                            [artworkUrl60] => http://is5.mzstatic.com/image/thumb/Music4/v4/1f/b8/0f/1fb80f69-bd94-8cad-0a2f-b082541d5f64/source/60x60bb.jpg
                        )

                    [2] => stdClass Object
                        (
                            [artistName] => Real Crime Profile
                            [feedUrl] => http://feeds.soundcloud.com/users/soundcloud:users:202076064/sounds.rss
                            [primaryGenreName] => History
                            [artworkUrl60] => http://is5.mzstatic.com/image/thumb/Music69/v4/e4/0d/1e/e40d1efe-f625-8d15-4e2e-706fecead1e8/source/60x60bb.jpg
                        )

                )

        )

)

This is close to what I'm looking for, but ideally, I'd like to simplify this even more so I don't have an a and b "tree" within this array.

This is what I'm trying to end up with:

Array
(
    [a] => Array
        (
            [entries] => Array
                (
                    [0] => stdClass Object
                        (
                            [title] => Serial - This American Life
                            [id] => Serial is a podcast from the creators of This American Life, hosted by Sarah Koenig. 
                            [artistName] => This American Life
                            [feedUrl] => http://feeds.serialpodcast.org/serialpodcast
                            [primaryGenreName] => News & Politics
                            [artworkUrl60] => http://is2.mzstatic.com/image/thumb/Music69/v4/70/c9/71/70c97133-f3a8-738e-ea2c-27a6dc7d9731/source/60x60bb.jpg
                        )

                    [1] => stdClass Object
                        (
                            [title] => This American Life - This American Life
                            [id] => This American Life is a weekly public radio show, heard by 2.2 million people on more than 500 stations.
                            [artistName] => This American Life
                            [feedUrl] => http://feed.thisamericanlife.org/talpodcast
                            [primaryGenreName] => Personal Journals
                            [artworkUrl60] => http://is5.mzstatic.com/image/thumb/Music4/v4/1f/b8/0f/1fb80f69-bd94-8cad-0a2f-b082541d5f64/source/60x60bb.jpg
                        )

                    [2] => stdClass Object
                        (
                            [title] => Real Crime Profile - Real Crime Profile
                            [id] => Podcast talking about criminal cases and personality profiling.
                            [artistName] => Real Crime Profile
                            [feedUrl] => http://feeds.soundcloud.com/users/soundcloud:users:202076064/sounds.rss
                            [primaryGenreName] => History
                            [artworkUrl60] => http://is5.mzstatic.com/image/thumb/Music69/v4/e4/0d/1e/e40d1efe-f625-8d15-4e2e-706fecead1e8/source/60x60bb.jpg
                        )

                )

        )

)

I've also tried array_merge_recursive($array1['entries'],$array2['entries'], but this give me something like this (6 objects [2 from one array and 4 from the other] instead of 3):

Array
(
    [0] => stdClass Object
        (
            [title] => Serial - This American Life
            [id] => Serial is a podcast from the creators of This American Life, hosted by Sarah Koenig. Serial unfolds one story - a true story - over the course of a whole season. 
        )

    [1] => stdClass Object
        (
            [title] => This American Life - This American Life
            [id] => This American Life is a weekly public radio show, heard by 2.2 million people on more than 500 stations. 
        )

    [2] => stdClass Object
        (
            [title] => Real Crime Profile - Real Crime Profile
            [id] => Podcast talking about criminal cases and personality profiling.
        )

    [3] => stdClass Object
        (
            [artistName] => This American Life
            [feedUrl] => http://feeds.serialpodcast.org/serialpodcast
            [primaryGenreName] => News & Politics
            [artworkUrl60] => http://is2.mzstatic.com/image/thumb/Music69/v4/70/c9/71/70c97133-f3a8-738e-ea2c-27a6dc7d9731/source/60x60bb.jpg
        )

    [4] => stdClass Object
        (
            [artistName] => This American Life
            [feedUrl] => http://feed.thisamericanlife.org/talpodcast
            [primaryGenreName] => Personal Journals
            [artworkUrl60] => http://is5.mzstatic.com/image/thumb/Music4/v4/1f/b8/0f/1fb80f69-bd94-8cad-0a2f-b082541d5f64/source/60x60bb.jpg
        )

    [5] => stdClass Object
        (
            [artistName] => Real Crime Profile
            [feedUrl] => http://feeds.soundcloud.com/users/soundcloud:users:202076064/sounds.rss
            [primaryGenreName] => History
            [artworkUrl60] => http://is5.mzstatic.com/image/thumb/Music69/v4/e4/0d/1e/e40d1efe-f625-8d15-4e2e-706fecead1e8/source/60x60bb.jpg
        )

)

Thoughts on how to merge these into 3 objects?

Answer 1

This is only an example, to explain how you can use function multiArrayCombine from my answer to another question:

foreach( $array['a']['entries'] as &$val ) $val = (array) $val;
foreach( $array['b']['entries'] as &$val ) $val = (array) $val;

$result = multiArrayCombine( $array['a']['entries'], $array['b']['entries'], T_OBJECT_CAST );

$array['a']['entries'] = $result;
unset( $array['b'] );

print_r( $array );

<kbd>eval.in demo</kbd>

As I said, this is only an example: the function has the option to return objects but not to analyze it. You can modify it to process also objects and use it directly, without above first two lines.

Answer 2

Try

for($i=0;$i<count($array1['entries']); $i++){
  $array3['entries'][$i] =(object) ((array) $array1['entries'][$i] + (array) $array2['entries'][$i]);
}

Answer 3

The function array_replace_recursive will do what you describe. The problem with array_merge_recursive is that when it encounters sequential arrays, it concatenates the values of the merged arrays, rather than overwriting those entries with the same index. array_replace_recursive is essentially the same thing but always treats arrays as associative and never concatenates them.

http://php.net/manual/en/function.array-replace-recursive.php

Since your leaf nodes are all stdObjects and array_merge_recursive won't merge objects, you will need to convert them to arrays first.

Example:

<?php

$a = [
        'entries' => [
                (object) [
                        'title' => 'Alpha',
                        'id' => 'Alpha ...'
                ],
                (object) [
                        'title' => 'Beta',
                        'id' => 'Beta ...'
                ]
        ]
];

$b = [
        'entries' => [
                (object) [
                        'artistName' => 'Alpha artist',
                        'feedUrl' => 'fdsfsdf'
                ],
                (object) [
                        'artistName' => 'Beta artist',
                        'feedUrl' => 'gfdsgfds'
                ]
        ]
];

function convert_objects($array) {
        array_walk_recursive($array, function(&$value) {
                $value = (array) $value;
        });
        return $array;
}

var_export(array_replace_recursive(convert_objects($a), convert_objects($b)));

Which prints:

array (
  'entries' => 
  array (
    0 => 
    array (
      'title' => 'Alpha',
      'id' => 'Alpha ...',
      'artistName' => 'Alpha artist',
      'feedUrl' => 'fdsfsdf',
    ),
    1 => 
    array (
      'title' => 'Beta',
      'id' => 'Beta ...',
      'artistName' => 'Beta artist',
      'feedUrl' => 'gfdsgfds',
    ),
  ),
)