Question

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Combine Two Arrays with numerical keys without overwriting the old keys

OK guys, was searching about this one with no luck – it always points only to array_merge or array_push or array_combine functions which are useless for my purpose.

Here are two arrays (number indexed):

Array (
    [0] => 12345
    [1] => "asdvsdfsasdfsdf"
    [2] => "sdgvsdfgsdfbsdf"
)
Array (
    [0] => 25485
    [1] => "tyjfhgdfsasdfsdf"
    [2] => "mojsbnvgsdfbsdf"
)

and I need to create one “joined” (unioned) array, so it will look like:

Array (
    [0] => 12345
    [1] => "asdvsdfsasdfsdf"
    [2] => "sdgvsdfgsdfbsdf"
    [3] => 25485
    [4] => "tyjfhgdfsasdfsdf"
    [5] => "mojsbnvgsdfbsdf"
)

As I found nothing on this problem I tried by myself ($arr1 and $arr2 are the two small arrays):

$result_array = $arr1;
foreach($arr2 as $v) {
    $result_array[] = $v;
}

This is, of course, working fine but I don’t like this approach – imagine the situation when there will not be just 3 elements in second array…

Question: is there a better approach or at the best some built-in function (I do not know about)???

Answer 1

Array merge works fine for your numerically indexed arrays:

<?php

$arrayOne = array(
     0 => 12345
    ,1 => "asdvsdfsasdfsdf"
    ,2 => "sdgvsdfgsdfbsdf"
);
$arrayTwo =  array(
     0 => 25485
    ,1 => "tyjfhgdfsasdfsdf"
    ,2 => "mojsbnvgsdfbsdf"
);


$arrayMerged = array_merge($arrayOne, $arrayTwo);

print_r($arrayMerged);

?>

output:

Array
(
    [0] => 12345
    [1] => asdvsdfsasdfsdf
    [2] => sdgvsdfgsdfbsdf
    [3] => 25485
    [4] => tyjfhgdfsasdfsdf
    [5] => mojsbnvgsdfbsdf
)