Combine multiple 1-dimensional arrays into one multidimensional array

Question

Using the following arrays as input:

style numbers: Array ( [0] => 1001 [1] => 1002 [2] => 1003 )
colors: Array ( [0] => 'red' [1] => 'red' [2] => 'red' )
small size: Array ( [0] => 1 [1] => 1 [2] => 1 )
large size: Array ( [0] => 2 [1] => 2 [2] => 2 )

I need to create an array like this:

 array(
    '1001'=>array(
        'color'=>'red',
        'small_size'=>1,
        'large_size'=>2,
    ),
    '1002'=>array(
        'color'=>'red',
        'small_size'=>1,
        'large_size'=>2,
    ),
    '1003'=>array(
        'color'=>'red',
        'small_size'=>1,
        'large_size'=>2,
    )
)

Read this stack answer : http://stackoverflow.com/questions/14842272/php-array-merge-two-arrays-on-same-key — Hiren Makwana, Apr 14 '17 at 06:25
I have edited this question to clarify the meaning. Please open this up again, I've dying to drop in a unique answer! @AliveToDie — mickmackusa, Apr 15 '17 at 07:49
@NarotamSaini please do not accept an answer until the question is _unheld_ so that I may submit my answer for your review. — mickmackusa, Apr 15 '17 at 08:42
It seems I'll need to wait for 5 days... https://meta.stackexchange.com/questions/188007/how-long-will-a-question-be-in-on-hold-status — mickmackusa, Apr 16 '17 at 00:22

Alive to die - Anant · Accepted Answer · 2017-04-15T09:42:48.073

2

Do it like below (very simple):-

$final_array = array();

foreach($style as $key=>$val){
  $final_array[$val]['color'] = $colors[$key];
  $final_array[$val]['small_size'] = $small_size[$key];
  $final_array[$val]['large_size'] = $large_size[$key];
}

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

Output:- https://eval.in/776784

A Better approach to do it:- https://eval.in/776787

edited Apr 15 '17 at 09:42

answered Apr 14 '17 at 06:30

Alive to die - Anant

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@mickmackusa what typo? in your example link everything perfectly fine. – Alive to die - Anant Apr 15 '17 at 08:31
@mickmackusa it's not a typo. i just take that name. it's ridiculous . I was thinking that my logic is wrong or some error is coming in my code. – Alive to die - Anant Apr 15 '17 at 09:03
@mickmackusa done. check now. I am also not fighting with you. :):):) – Alive to die - Anant Apr 15 '17 at 09:43
I edited this question a while ago (while it was "on hold") and now that it has gone past the holding time period, I would like to ask you to re-open the question. The question is clear now. I assume you have the super-powers necessary to reopen this question. If you feel it shouldn't be re-opened please leave me a comment explaining why. – mickmackusa Apr 22 '17 at 09:33

Tom Udding · Answer 2 · 2017-04-14T06:38:48.477

You can simply achieve this using a for loop:

$arrayNumbers = array(1001, 1002, 1003);
$arrayColours = array('red', 'red', 'red');
$arraySmallSizes = array(1, 1, 1);
$arrayLargeSizes = array(2, 2, 2);

$output = array();

$count = count($arrayNumbers);
for($i = 0; $i < $count; $i++) {
    $output[$arrayNumbers[$i]] = array('color' => $arrayColours[$i], 'small_size' => $arraySmallSizes[$i],'large_size' => $arrayLargeSizes[$i]);
}

print_r($output);
// Array (
    [1001] => Array ( [color] => red [small_size] => 1 [large_size] => 2 )  
    [1002] => Array ( [color] => red [small_size] => 1 [large_size] => 2 ) 
    [1003] => Array ( [color] => red [small_size] => 1 [large_size] => 2 )
)

(See https://3v4l.org/9Wpj9 for the performance)
Or using a foreach loop:

$arrayNumbers = array(1001, 1002, 1003);
$arrayColours = array('red', 'red', 'red');
$arraySmallSizes = array(1, 1, 1);
$arrayLargeSizes = array(2, 2, 2);

$output = array();
foreach($arrayNumbers as $key => $value) {
    $output[$arrayNumbers[$key]] = array('color' => $arrayColours[$key], 'small_size' => $arraySmallSizes[$key],'large_size' => $arrayLargeSizes[$key]);
}

print_r($output);

(See https://3v4l.org/ifv1o for the performance)

score 0 · Answer 3 · edited Apr 14 '17 at 11:43

0

Hello You can try this code i have tested it-

$array1 = array( 0 => 1001  , 1 => 1002 ,2 => 1003 );
$array2 = array( 0 => 'red' ,1 => 'red' ,2 => 'red' );
$array3 = array( 0 => 1 ,1 => 1 ,2 => 1 );
$array4 = array( 0 => 2, 1 => 2 ,2 => 2 );
$final_array = [];
foreach($array1 as $key =>$value){
    $final_array[$value]['color'] =   $array2[$key];
    $final_array[$value]['small_size'] =   $array3[$key];
    $final_array[$value]['large_size'] =   $array4[$key];
}
print_r($final_array);

edited Apr 14 '17 at 11:43

Alive to die - Anant

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answered Apr 14 '17 at 06:36

Gohel Dhaval

820
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12

Using a `foreach()` method was posted by AlivetoDie 6 minutes before your answer was posted. All duplicate answers should be removed because they do not help SO readers and only cause page bloat. Please practice good SO citizenship and delete this answer. – mickmackusa Apr 17 '17 at 12:28

VirCom · Answer 4 · 2017-04-14T07:12:10.780

-1

that code should resolve your problem:

$input = array(
    '1001'=>array(
        'color'=>'red',
        'small_size'=>1,
        'large_size'=>2,
    ),
    '1002'=>array(
        'color'=>'red',
        'small_size'=>1,
        'large_size'=>2,
    ),
    '1003'=>array(
        'color'=>'red',
        'small_size'=>1,
        'large_size'=>2,
    ),
);

$keys = array_keys($input);

$color = array_column($input, 'color');
$smallSize = array_column($input, 'small_size');
$largeSize = array_column($input, 'large_size');

edited Apr 14 '17 at 07:12

answered Apr 14 '17 at 06:30

VirCom

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1
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10

You are confused by this poorly worded question. You are using output as input and providing the input as output. – mickmackusa Apr 15 '17 at 04:59

score -1 · Answer 5 · answered Apr 14 '17 at 06:46

-1

You can use array_column

 $data = array(
    '1001'=>array(
        'color'=>'red',
        small_size=>1,
        large_size=>2,
    ),
    '1002'=>array(
        'color'=>'red',
        small_size=>1,
        large_size=>2,
    ),
    '1003'=>array(
        'color'=>'red',
        small_size=>1,
        large_size=>2,
    ),
);

var_dump(array_column($data, 'color'));

var_dump(array_column($data, 'small_size'));

Output:

array(3) { [0]=> string(3) "red" [1]=> string(3) "red" [2]=> string(3) "red" } 

array(3) { [0]=> int(1) [1]=> int(1) [2]=> int(1) }

answered Apr 14 '17 at 06:46

Priyank

1,180
1
15
26

You are confused by this poorly worded question. You are using output as input and providing the input as output. – mickmackusa Apr 15 '17 at 05:00
What I understood in oq is he is having multi dimension array and he needs selected keys outupt (color, small_size, large_size) in single array. – Priyank Apr 17 '17 at 05:09

Combine multiple 1-dimensional arrays into one multidimensional array

5 Answers5