How to duplicate every key in php array

Question

How to add an duplicate array that after every items in array parent, the same array item is added.

The array is :

Array
(
    [0] => Array
        (
            [0] => zero
        )

    [1] => Array
        (
            [0] => one
        )
        
)

Result expectation :

Array
(
    [0] => Array
        (
            [0] => zero
        )

    [1] => Array
        (
            [0] => zero
        )

    [2] => Array
        (
            [0] => one
        )

    [3] => Array
        (
            [0] => one
        )

)

Please provide me with the proper code. Any help will be appreciated <3

What have you tried so far? Where are you stuck?

Nico Haase
– Nico Haase

2021-08-05 12:43:40 +00:00
Commented Aug 5, 2021 at 12:43 — Nico Haase
– Nico Haase, Commented Aug 5, 2021 at 12:43
Why not $array = array_merge($array, $array);?

Zhorov
– Zhorov

2021-08-05 13:08:34 +00:00
Commented Aug 5, 2021 at 13:08 — Zhorov
– Zhorov, Commented Aug 5, 2021 at 13:08

Delmontee · Accepted Answer · 2021-08-05 13:05:41Z

1

$originalarray = ["zero","one","two"];
$newarray = [];

foreach($originalarray as $key=>$val){
    array_push($newarray,$val);
    array_push($newarray,$val);
}

print_r( $newarray);

?

answered Aug 5, 2021 at 13:05

Delmontee

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