Question

I have at least two arrays (actually four+):

$first_names = array(
  '0' => 'Jon'
  '1' => 'David'
  );

$last_names = array(
  '0' => 'Schumacher'
  '1' => 'Johnson'
  );

And need to produce:

$full_names = array(
  '0' => array('first' => 'Jon', 'last' => 'Schumacher')
  '1' => array('first' => 'David', 'last' => 'Johnson')
);

Do not need to preserve original keys (but of course, would prefer to. Need to do this for more than 4 arrays.

Am having trouble finding the ‘best’ solution (could pop off of each, but that seems likely to produce errors to me).

Answer 1

you should try array_map:

$first_names = array(
    '0' => 'Jon'
    '1' => 'David'
);

$last_names = array(
    '0' => 'Schumacher'
    '1' => 'Johnson'
);

$full_names = array_map(function($first, $last) {
    return compact('first', 'last');
}, $first_names, $last_names);