Combine two different dimensional arrays PHP

Question

I have two different dimensional arrays.

Array 1:

Array1 
(
[0] => Array
    (
        [id] => 123 
        [price] => 5
        [purchase_         


        

Answer 1

If the $array1 and $array2 are mapped by the same indexes, so they have same length, you can try:

foreach($array2 as $index=>$quantity){
  $array1[$index]['Qty'] = $quantity;
}

And it´s done! If you want to keep the original $array1 untouched, you can make a copy before the foreach.

Answer 2

Create new array and store it there. You can access the value of $array2 because they have the same index of $array1 so you can use the $key of these two arrays.

   $array3 = [];
   foreach($array1 as $key => $val) {
     $array3[] = [
       'id' => $val['id'],
       'price' => $val['price'],
       'purchase_time' => $val['purchase_time'],
       'Qty' => $array2[$key]
     ];
   }

  print_r($array3);

Answer 3

Might be a simpler way, but for fun without foreach:

array_walk($array1, function(&$v, $k, $a){ $v['Qty'] = $a[$k]; }, $array2);

Answer 4

The simplest way is:

$i = 0;
foreach($array1 as &$row) {
    $row['Qty'] = $array2[$i++];
}

Or if keys of both arrays are the same (0,1,2...) and array have the same length:

foreach($array1 as $k => &$row) {
    $row['Qty'] = $array2[$k];
}