PHP - Mixed array into Indexed arrays

Question

$transport = array(
  "Car" => array('Volvo','BMW','Saab','Land Roover'),
  array("Air Plane"),
  "Boat" => array('Ship','Yacht','Sail Boat'), 
  array("Bicycle")
);

print_r($transport);
echo "<br/><br/><br/><br/>";

How can I write a function that will turn array $transport into array $transport_in_array? The goal is to wrap all elements of $transport inside an array so that the $transport_in_array becomes indexed.

$transport_in_array = array(
  array("Car" => array('Volvo','BMW','Saab','Land Roover')),
  array("Air Plane"),
  array("Boat" => array('Ship','Yacht','Sail Boat')),
  array("Bicycle")
);

print_r($transport_in_array);

$transport is indexed, it just has mixed key types.

Preston Guillot
– Preston Guillot

2020-05-06 16:04:40 +00:00
Commented May 6, 2020 at 16:04 — Preston Guillot
– Preston Guillot, Commented May 6, 2020 at 16:04

elixon · Accepted Answer · 2020-05-06 16:02:30Z

2

$transport=array_map(function($k, $v) {
    return is_int($k) ? $v : array($k => $v);
}, array_keys($transport), $transport);

answered May 6, 2020 at 16:02

elixon

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Comments

brevis · Accepted Answer · 2020-05-06 16:01:34Z

1

Seems to it can be done in simple loop:

$transport = array(
  "Car" => array('Volvo','BMW','Saab','Land Roover'),
  array("Air Plane"),
  "Boat" => array('Ship','Yacht','Sail Boat'), 
  array("Bicycle")
);

$transport_in_array = array();
foreach ($transport as $key=>$value) {
    $transport_in_array[] = is_string($key) ? array($key => $value) : $value;
}

answered May 6, 2020 at 16:01

brevis

1,20110 silver badges17 bronze badges

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