Merge rows from two arrays which have different depths, but same count

Question

I need to merge two arrays with different depths, but with the same count. How can I distribute all of the rows from my first array to be the first row in each group of my second array?

$array1 = [
    [1, 2, 3],
    [1, 2, 3],
    [1, 2, 3]
];

$array2 = [
    [
        [4, 5, 6, 7, 8],
        [9, 10, 11, 12, 13],
        [14, 15, 16]
    ],
    [
        [4, 5, 6, 7, 8],
        [9, 10, 11, 12, 13],
        [14, 15, 16]
    ],
    [
        [4, 5, 6, 7, 8],
        [9, 10, 11, 12, 13],
        [14, 15, 16]
    ]
];

Desired result:

[
    [
        [1, 2, 3],
        [4, 5, 6, 7, 8],
        [9, 10, 11, 12, 13],
        [14, 15, 16]
    ],
    [
        [1, 2, 3],
        [4, 5, 6, 7, 8],
        [9, 10, 11, 12, 13],
        [14, 15, 16]
    ],
    [
        [1, 2, 3],
        [4, 5, 6, 7, 8],
        [9, 10, 11, 12, 13],
        [14, 15, 16]
    ]
]

Did you look at [`array_map`](http://php.net/manual/en/function.array-map.php)? — Sudheesh Singanamalla, Apr 28 '18 at 14:37
`array_merge` should do the job : http://php.net/manual/en/function.array-merge.php — Treast, Apr 28 '18 at 14:42
@whoami yes of corse but all tht do is i become from 3 array 6 array it just add first array to second and tht it was but i need to add an array to an subbaray. — Cananau Cristian, Apr 28 '18 at 14:43
Use a combination of them! `array_map` with `array_merge` on its results. *Edit* Oops race condition. Eddie's answer below seems to be what you're looking for. — Sudheesh Singanamalla, Apr 28 '18 at 14:44
[Implementation of the advice in the dupe target](https://3v4l.org/oSK94) — mickmackusa, Sep 24 '22 at 22:50

Eddie · Accepted Answer · 2018-04-28T14:47:02.723

You can use array_map to loop thru your array and use array_merge to merge the 2 arrays.

$arary1 = ...

$array2 = ...

$newarray = array_map(function ($a, $b) {
    return array_merge(array($a),$b);
}, $arary1, $array2 );

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

This will result to:

Or using foreach loop

$newarray = array();
foreach( $arary1 as $key => $val ) {
    $newarray[] = array_merge(array($val),$array2[$key]);
}

Doc: array_map, array_merge

thx of lot, but how can i do this without using array_map ? Maybe an foreach and for ? — Cananau Cristian, Apr 28 '18 at 14:46

Merge rows from two arrays which have different depths, but same count

1 Answers1