Merge two arrays into one multi-dimensional array

Question

So I have two seperate arrays. One with the IDs of the target, and one with the name of the target. Both are in cronilogical order.

Example:

  $array[1] => Array
    (
        [0] => 113139803806479652682
        [1] => 100276549585470687394
    )

and

 $array[2] => Array
    (
        [0] => EDM
        [1] => Space
    )

So in $array[1] the [0] in that is the ID for "EDM" (as seen in $array[2]) and then [1] in $array[1] is the name ID for "Space".

What I want to achieve is outputting a new array which would look like this:

  [0] => Array
 ( 
  [0] => 113139803806479652682
  [1] => EDM
 )
  [1] => Array
 (
 [0] => 100276549585470687394
 [1] => Space
 )

Basically a new array which returns a multiple dimensional array with the ID and name in the same array as taken from the two sepearte arrays that had the names and IDs in order already, just I want them formed so they go together.

I hope this makes sense. I'm kind of new to PHP and coding in general.

FuzzyTree · Accepted Answer · 2014-06-27 02:35:57Z

1

$results = [];

foreach($array1 as $key => $value) {
    $results[$key] = [$array1[$key],$array2[$key]];
}

answered Jun 27, 2014 at 2:35

FuzzyTree

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2 Comments

user1687621 Over a year ago

Well. My array I'm working with is already a multi dimensional array. I basically want to combine the results of [1] and [4] ([1] being the IDs and [4] being the names) into a new multi-dimensional array combinging the IDs and names into each other's array. If that makes any since.

FuzzyTree Over a year ago

maybe $results[$key] = [$array1[$key][1],$array2[$key][4]]? if your array is different from what's shown in the question, please update the question.

Kylie · Accepted Answer · 2014-06-27 02:36:18Z

0

 $newarray=array();

foreach($array1 as $k=>$val){

  $newarray[$k]['ID'] = $val;
  $newarray[$k]['name'] = $array2[$k];

}

answered Jun 27, 2014 at 2:36

Kylie

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2 Comments

Paresh Mayani Over a year ago

What's this code about? You should include brief too.

mickmackusa Over a year ago

This solution takes the OP's plain English too literally and does not provide the desired result. Also, these are not separate arrays, they are two subarrays within a parent array.

dKab · Accepted Answer · 2014-06-27 02:46:21Z

0

It may be not the most elegant solution, but it'll do the trick. Here the code:

$arraySum = array();
for($i=0; $i<count($array1); $i++) {
    $arraySum[$i][$i] = $array1[$i];
    $arraySum[$i][$i+1] = $array2[$i];
}

answered Jun 27, 2014 at 2:46

dKab

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1 Comment

mickmackusa Over a year ago

Calling count() on each iteration of the loop is not best practice -- it should be cached. There is no $array1 nor $array2 to use so this code will not work for the posted question. $arraySum is a poor choice for a variable name because it does not contain any summed data. All answers, even simple ones, should be explained to researchers.

mickmackusa · Accepted Answer · 2019-01-21 14:20:02Z

By calling upon array_map() with a null callback parameter and a "splat operator" on $array to "unpack it" as multiple single-dimensional input arrays, you can cleverly generate your desired, re-indexed output array in a concise one-liner.

Code: (Demo)

$array[1] = [
     '113139803806479652682',
     '100276549585470687394'
];

$array[2] = [
     'EDM',
     'Space'
];

var_export(array_map(null, ...$array));

Output:

array (
  0 => 
  array (
    0 => '113139803806479652682',
    1 => 'EDM',
  ),
  1 => 
  array (
    0 => '100276549585470687394',
    1 => 'Space',
  ),
)

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