How to merge between two arrays by index

Question

I have two arrays .. first array like this :

$questions = [
    "type" => "form",
    "controls" => []
];

and second array is filled by foreach loop like this :

$count = 0;
foreach($x as $y){
    $controls [
        "id" => $y.$count,
        "id2" => $y.$count+1,
    ]

    $count++;
}

I want to merge all values from the second array to controls index from first array

any help please

Answer 1

No need to merge, just put the result directly into the location you want them in the loop

$questions = [
        "type" => "form",
        "controls" => []
    ];   

$count = 0;
foreach($x as $y){
    $questions['controls'][] =  ["id" => $y.$count,
                                 "id2" => $y.$count+1];
    $count++;
}

Answer 2

Just do:

$questions['controls'] = $controls;

You also need to fix your syntax for filling in $controls , it should be:

$controls[] = [
    "id" => $y.$count,
    "id2" => $y.$count+1,
];