How to map the two arrays with a duplicate value?

Question

I have two arrays.

$array1 = ['id_e' =>[91707, 91708]];
$array2 = ['id_s' => [18, 57]];

If I want to insert or delete into the database, I want to make one-to-many mappings on these two arrays. And the result I expect it to be a new array as shown below.

Final Array:

array (size=4)
  0 => 
    array (size=2)
      'id_e' => int 91707
      'id_s' => int 18
  1 => 
    array (size=2)
      'id_e' => int 91707
      'id_s' => int 57
array (size=2)
  2 => 
    array (size=2)
      'id_e' => int 91708
      'id_s' => int 18
  3 => 
    array (size=2)
      'id_e' => int 91708
      'id_s' => int 57

I'm stuck after returning array1 and array2. I'm a beginner in php.

How do I do this?

Answer 1

Easiest way is:

$res = array();
foreach ($array1['id_e'] as $ide)
    foreach ($array2['id_s'] as $ids)
        $res[] = array('id_e' => $ide, 'id_s' => $ids);